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Section 2 Analyses

Section 2 Analyses

 

2.1 Contextual Background

 

Over the past several years, Cary has been developing and defining a broader contextual vision for the entire downtown area. Seen as a cultural, commercial and service center for the broader community of Cary, the planning and policies set into place are also considered in the preparation of this 2007 parking study.

 

The Cary Streetscape Master Plan prepared with the assistance of the Urban Resource Group specifically identifies parking related ‘Guiding Principals’.  The statement (below) is consistent with modern thinking or ‘best-practices’ for parking development in urban cores where increased density and pedestrian activity are desirable. 

 

“Parking should be provided on-street or in parking decks situated within the interior of blocks so as not to consume street frontage. Alternatively, provide limited on-site parking tucked behind the buildings that face the street”

 

Rich and Associates also adopts a philosophy that parking should support the community’s greater vision for economic activity by being adequate, but not a surplus beyond the existing and potential need.  Specifically, our approach is to consider parking allocation, location, design, multi-modal opportunities and operating efficiency in conjunction with necessary expansion. 

 

 

2.2 Analysis Introduction

 

This section of the report is an assessment of how the existing parking is operating and how much new parking may be required based on current and anticipated future developments. For the analysis, Rich and Associates used turnover and occupancy data, parking and building inventories, business owner surveys and previous experience with parking to refine and determine the report’s analysis.

 

The process consisted of a two-part analysis.  The first part of the analysis included a calculation of parking demand by block based on a building inventory and parking generation factors per 1,000 square feet of gross floor space.  The demand was netted from the available supply and the resulting surplus or deficit determined on a block-by-block basis. 

 

The second part of the analysis involved comparing the parking surplus and deficit patterns to the turnover and occupancy data.  This comparison offered a benchmark, by which the surplus and deficit data was calibrated.

 

 


 

2.3 Parking Inventory

 

Table 2A summarizes the existing parking supply in the primary study area in downtown Cary.  There are a total of approximately 3,464 parking spaces in the study area.  Of theses 280 are on-street spaces and 1,009 are off-street public spaces. Except for the on-street parking, Town Hall complex and the Train Station, the Town has no true public parking in the study area. 

 

Of the 1,009 public off-street spaces, 826 spaces are located at the Town Hall, 50 at the Library (public, but reserved for Library patrons and employees) and 133 at the train station.  There are 2,175 private parking spaces in the core downtown focus area.  The percentage comparison is as follows:

 

Table 2A – Public/Private Parking Comparison

 

 

Public

Private

On-Street (280 stalls)

8%

0%

Off-Street (3,184 stalls)

29%

71%

Totals (3,462 stalls)

37%

63%

 

 

The importance of comparing the public to private ratio is that greater amounts of public parking allow for expanded shared use opportunities, reducing the overall amount of parking needed to service an equivalent amount of building space. 

 

Similarly, public control over a majority amount of parking allows for the Town to effectively implement policy driven strategies with the parking.  This allows the Town to be able to respond to development scenarios and opportunities in a timely and effective manner with parking provision.

 

Table 2B on page 4 is a detailed parking supply listing types and durations of parking by each block and is followed by Map 2, which is a spatial view of the parking supply.   In cases where parking spaces were not marked, the numbers of parking spaces were estimated.  For the purpose of the study any parking marked reserved or privately owned was designated as private parking. 

 

Of the 1,897 spaces in the core (south of the tracks) the Town of Cary manages and controls only the on-street parking which is about 14 percent of the parking in the downtown core.  Based on Rich and Associates’ experience and best practices, we have found that to successfully manage municipal parking it is desirable for the municipality to have control of at least 50 percent of the parking supply. This allows the municipality to effectively manage the parking in terms of allocation, changing demand, market pricing, and allows the parking to be enforced with greater efficiency.  Cary falls short of this benchmark.

 

 

In general, on-street parking spaces are not striped or marked and signage is not always clear with respect to time restrictions.  There is only one off-street lot that has time restrictions (Ashworth Village Lot has two hour restricted parking).

 

The parking supply table breaks down the parking supply into general categories.  While there are no rules regarding the ratio of on-street to off-street parking, on-street parking always works best for customers and visitors in a downtown setting.

 

The definitions associated with Table 2B are as follows:

·         Not Signed – no sign limiting the time a vehicle may park.

·         15 minute – signed 15 minute parking.

·         One hour – signed 1 hour parking.

·         Public – Town owned parking.

·         Private – Privately owned parking.

·         Loading Zone- spaces marked for loading

·         ADA- signed barrier free spaces

 

In general, Rich and Associates recommends that the Town endeavor to control a greater percentage of the parking.   Specifically, the Town should consider limiting new private parking, particularly surface lots that have a tendency to reduce building density and pedestrian activity. 

 

Reduced density and reduced pedestrian activity both contribute to a need for more parking.  Conversely, higher density and greater amounts of pedestrian activity have a tendency to reduce needed parking.  Specific recommendations dealing with this are detailed in Section Four.

 

Employee parking and long-term parking for customers and visitors should always be encouraged in off-street locations.  Employees in particular are more willing to walk greater distances.  Rich and Associates typically recommends 350 feet as a benchmark distance for customer and visitor walking distance and 650 feet for employee walking distance to and from parking areas.

 

Map Two on page 5 illustrates graphically the available parking supply in the study area.


Table 2B – Downtown Focus Area Parking Supply Summary

 

Block >

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Summary

On-Street

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Not Signed

 

32

33

 

21

34

17

 

5

 

 

 

 

 

 

27

35

 

5

 

 

 

 

209

15 Minute

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

One Hour

 

 

 

 

 

 

10

25

 

 

 

 

 

 

5

10

 

 

 

 

 

 

 

50

Loading Zone

 

 

 

 

 

 

5

3

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

10

Barrier Free (Handicap)

 

 

1

 

 

 

2

2

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

7

SUB TOTAL

0

32

34

0

21

38

34

30

5

0

0

0

0

0

5

39

35

0

7

0

0

0

0

280

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOTAL ON-STREET

280

Off-Street

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Public

0

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

826

133

 

 

 

1009

Private

 

6

124

56

131

101

110

259

179

37

 

86

48

102

72

145

196

 

 

 

133

151

100

2036

Barrier Free (Handicap)

 

3

3

3

6

1

 

15

3

2

 

2

1

 

3

1

3

 

14

12

2

6

 

80

Time Restricted

0

 

 

 

 

 

 

55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

Loading

0

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB TOTAL

0

59

127

59

137

102

110

333

182

39

0

88

49

102

75

146

199

0

840

145

135

157

100

3184

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOTAL OFF-STREET

3464

TOTAL SUPPLY

0

91

161

59

158

140

144

363

187

39

0

88

49

102

80

185

234

0

847

145

135

157

100

3464

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On-Street Parking Totals

 

 

 

 

280

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Off-Street Parking Totals

 

 

 

 

1009

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Public Parking Totals

 

 

 

 

1289

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Private Parking Totals

 

 

 

 

 

2175

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Parking in Study Area

 

 

 

3464

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Block 19 includes the 486 stall Town Hall Parking Structure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Source: Rich and Associates Fieldwork, September 2007

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 2: Parking Supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


2.3    Turnover and Occupancy Study

 

A turnover and occupancy study was undertaken in the downtown study area over the course of a typical business day, Thursday, August 30th, 2007.  The turnover portion of the analysis included the on-street spaces and the off-street spaces in the Ashworth Village lot (where posted as a two-hour time limit).  This was done to determine how long specific vehicles where parked in certain spaces and if parkers were moving their vehicles to different spaces to avoid being cited for overtime parking. 

 

Turnover only applies to a portion of the parking stalls in the study area, as it is a measure specific to ‘short-term’ parking.  In all other spaces, in off-street lots (and the Town’s parking structure), the number of parking spaces occupied were.  Occupancy is a measure used to examine the level of utilization of parking and is calculated for all of the parking examined in the study area.

 

Occupancy is an important aspect of parking because it helps us to understand the dynamic of how parking demand fluctuates thought the day.  Likewise, the occupancy can be used to illustrate how parking demand is impacted by events in the downtown area.  Overall, the occupancy data is used by Rich and Associates to calibrate the parking demand model.  Tables 2C, 2D and Map 3 are the summary results of the turnover findings.

 

2.3.1 Observations

 

·         The turnover and occupancy analysis took place on Thursday, August 30th, 2007 from 9:00 A.M. until 5:00 P.M. The analysis covered public and private parking in the downtown area. 

·         This typical business day was selected to look at parking utilization and its impact on overall parking operations and efficiency.

·         On-street parking averaged 38 percent occupancy, with the peak time from 1:00 P.M. to 3:00 P.M. (45 percent occupancy).  Block faces that had the highest occupancies were 3D (S. Academy between Dry Ave. and Park Street) 85 percent occupancy, and 7A (E. Chatham between S. Academy and S. Walker) 88 percent occupancy.

·         Off-street parking achieved the highest occupancy from 1:00 P.M. to 3:00 P.M. (40 percent occupancy) and averaged 36 percent occupancy.

·         Off-street parking south of the rail tracks had peak occupancy of 39 percent from 1:00 P.M. to 3:00 P.M.  The average occupancy in this area was 33 percent.

·         Considering both on and off-street parking in the study area south of the tracks, the peak occupancy (41 percent) time was from 1:00 P.M. to 3:00 P.M.  The average occupancy of the on and off-street parking in this area was 34 percent.

·         For the one-hour on-street spaces; 73 percent stayed two hours or less, 12 percent stayed between two and four hours, five percent stayed between four and six hours, and 10 percent stayed six to eight hours.

 

·         For the on-street spaces with no time limit; 67 percent stayed two hours or less, 10 percent stayed two to four hours, 10 percent stayed four to six hours and 13 percent stayed six to eight hours.

·         For the Ashworth Village lot which has posted two-hour parking; 81 percent stayed two hours or less, 15 percent stayed two to four hours, and four stayed four to six hours.  No vehicle was parked over six hours.

·         In the Ashworth Village lot, there were two vehicles that moved spaces in the lot during their stay.  Those two vehicles actually stayed eight hours if you consider the time their vehicle was parked in the lot.

 

Table 2C – Observed Occupancy (On-Street)

Block # and Face

Est. # of Spaces

Space Type

9:00 am to 11:00 pm

%Occ.

11:00 am to 1:00 pm

%Occ.

1:00 pm to 3:00 pm

%Occ.

3:00 pm to 5:00 pm

%Occ.

On-Street

Block 8A

7

1 hour

0

0%

3

43%

3

43%

3

43%

Block 8B

18

1 hour

6

33%

8

44%

12

67%

9

50%

 

2

ADA

0

0%

0

0%

0

0%

0

0%

 

3

LZ

0

0%

0

0%

0

0%

0

0%

Block 2A

16

No limit

5

31%

4

25%

3

19%

3

19%

Block 2B

16

No limit

7

44%

7

44%

5

31%

9

56%

Block 3A

20

No limit

3

15%

3

15%

3

15%

3

15%

Block 3D

13

No limit

7

54%

11

85%

11

85%

9

69%

 

1

ADA

1

100%

0

0%

0

0%

0

0%

Block 5A

21

No limit

7

33%

5

24%

5

24%

3

14%

Block 6A

25

No limit

16

64%

17

68%

19

76%

8

32%

Block 6D

9

No limit

0

0%

2

22%

2

22%

1

11%

 

4

15 min.

0

0%

0

0%

1

25%

1

25%

Block 7A

10

1 hour

6

60%

3

30%

5

50%

2

20%

Block 7C

17

No Limit

14

82%

13

76%

15

88%

7

41%

 

1

ADA

1

100%

1

100%

1

100%

1

100%

 

5

LZ

3

60%

3

60%

3

60%

0

0%

Block 7D

1

ADA

0

0%

0

0%

0

0%

0

0%

Block 8A

7

1hour

0

0%

3

43%

3

43%

3

43%

Block 8B

18

1 hour

6

33%

9

50%

10

56%

8

44%

 

2

ADA

0

0%

0

0%

0

0%

0

0%

 

3

LZ

0

0%

0

0%

0

0%

0

0%

Block 15C

5

1 hour

0

0%

1

20%

3

60%

0

0%

Block 16A

25

 

8

32%

7

28%

8

32%

9

36%

Block 16C

10

1 hour

4

40%

3

30%

7

70%

4

40%

Block 17A

35

 

13

37%

15

43%

15

43%

7

20%

Block 19D

5

Regular

3

60%

0

0%

2

40%

2

40%

 

2

ADA

0

0%

0

0%

1

50%

0

0%

Sum

301

 

110

37%

118

39%

137

46%

92

31%


Table 2D – Observed Occupancy (Off-Street)

 

Block # and Face

Est. # of Spaces

Space Type

9:00 am to 11:00 pm

%Occ.

11:00 am to 1:00 pm

%Occ.

1:00 pm to 3:00 pm

%Occ.

3:00 pm to 5:00 pm

%Occ.

Off- Street

Block 2

 

 

 

 

 

 

 

 

 

 

Library Lot

 

 

 

 

 

 

 

 

 

 

Staff Lot

5

 

4

80%

4

80%

4

80%

3

60%

Public Lot

45

 

14

31%

25

56%

28

62%

20

44%

Handicapped Stalls

3

 

0

0%

3

100%

3

100%

0

0%

Block 3

 

 

 

 

 

 

 

 

 

 

Private Lot

15

 

11

73%

11

73%

11

73%

9

60%

Private Lot

14

 

0

0%

0

0%

0

0%

0

0%

Private 315 Lot

15

 

8

53%

10

67%

13

87%

11

73%

Private Lot

15

 

6

40%

10

67%

5

33%

4

27%

Private 301 Lot

29

 

15

52%

17

59%

20

69%

19

66%

Block 5

 

 

 

 

 

 

 

 

 

 

BB&T Building Lot

81

 

18

22%

27

33%

29

36%

21

26%

Block 6

 

 

 

 

 

 

 

 

 

 

Post Office Lot (Academy)

17

 

2

12%

5

29%

6

35%

6

35%

Back PO Lot

18

 

3

17%

3

17%

3

17%

2

11%

Ashworth Overflow Parking Lot

28

 

9

32%

10

36%

11

39%

7

25%

Methodist Dirt Lot

36

 

1

3%

1

3%

0

0%

0

0%

Block 7

 

 

 

 

 

 

 

 

 

 

Kitchen Design (across sidewalk)

14

 

3

21%

3

21%

1

7%

1

7%

Kitchen Design Side Lot

15

 

7

47%

7

47%

11

73%

8

53%

Lot R

6

 

2

33%

3

50%

0

0%

1

17%

Lot L

19

 

12

63%

13

68%

10

53%

6

32%

Private Lot

8

 

4

50%

5

63%

7

88%

7

88%

Block 8

 

 

 

 

 

 

 

 

 

 

Baptist Church/Old Pet Store Lot

209

 

24

11%

66

32%

29

14%

16

8%

Lot/Old Cary overflow

44

 

16

36%

16

36%

9

20%

18

41%

Private Lot 135

11

 

12

109%

13

118%

12

109%

11

100%

Private Lot 125

8

 

3

38%

3

38%

3

38%

3

38%

Private Lot

4

 

0

0%

4

100%

4

100%

3

75%

Ashworth Parking Lot

55

Regular

14

25%

24

44%

52

95%

18

33%

 Handicap Stalls

2

ADA

0

0%

0

0%

1

50%

0

0%

 Loading Stalls

4

LZ

0

0%

2

50%

4

100%

3

75%

Church Office Lot

8

 

4

50%

5

63%

4

50%

1

13%

Block 9

 

 

 

 

 

 

 

 

 

 

Shopping Lot

17

 

4

24%

7

41%

8

47%

9

53%

 “

8

 

2

25%

2

25%

4

50%

3

38%

 “

12

 

0

0%

3

25%

4

33%

7

58%

Parkside Building Lot

31

 

7

23%

14

45%

13

42%

17

55%

Old Cary Lot

53

 

6

11%

11

21%

23

43%

23

43%

Baptist Lot

44

 

0

0%

0

0%

0

0%

0

0%

 


Table 2D (con’t) – Observed Occupancy (Off-Street)

Block # and Face

Est. # of Spaces

Space Type

9:00 am to 11:00 pm

%Occ.

11:00 am to 1:00 pm

%Occ.

1:00 pm to 3:00 pm

%Occ.

3:00 pm to 5:00 pm

%Occ.

Off- Street

Block 13

 

 

 

 

 

 

 

 

 

 

Mustang Lot

12

 

7

58%

6

50%

6

50%

4

33%

Chocolate Lot

31

 

6

19%

15

48%

13

42%

14

45%

Block 14

 

 

 

 

 

 

 

 

 

 

Paint Store Lot

58

 

5

9%

10

17%

11

19%

7

12%

House of Lights Lot

30

 

13

43%

12

40%

13

43%

11

37%

Block 15

 

 

 

 

 

 

 

 

 

 

Fidelity Bank Lot

65

Regular

16

25%

19

29%

19

29%

22

34%

 

3

ADA

2

67%

2

67%

2

67%

1

33%

Lot 111

 6

 

2

33%

3

50%

3

50%

3

50%

Private Lot

1

 

2

200%

2

200%

1

100%

1

100%

Block 17

 

 

 

 

 

 

 

 

 

 

Food Factory Lot

64

 

31

48%

40

63%

59

92%

38

59%

Block 19

 

 

 

 

 

 

 

 

 

 

City Hall A Lot

18

 

18

100%

18

100%

18

100%

17

94%

City Hall B Lot

19

Regular

9

47%

7

37%

20

105%

13

68%

 

6

ADA

1

17%

2

33%

1

17%

1

17%

City Hall C Lot

15

 

15

100%

15

100%

15

100%

12

80%

City Hall D Lot

230

Regular

83

36%

74

32%

71

31%

63

27%

 

6

ADA

1

17%

1

17%

1

17%

1

17%

City Hall E Lot

14

Regular

9

64%

12

86%

15

107%

7

50%

City Hall F Lot

 

 

 

 

 

 

 

 

 

 

City Hall G Lot

34

Regular

11

32%

6

18%

8

24%

7

21%

 

2

ADA

0

0%

0

0%

0

0%

0

0%

City Hall H Lot

10

Regular

1

10%

1

10%

1

10%

0

0%

 

 

 

 

 

 

 

 

 

 

 

Block 20

 

 

 

 

 

 

 

 

 

 

Amtrak Lot

133

Regular

51

38%

66

50%

56

42%

42

32%

 

12

ADA

0

 

0

 

0

 

0

 

Block 21

 

 

 

 

 

 

 

 

 

 

203 Harrison Lot

47

 

22

47%

33

70%

21

45%

17

36%

Pure Gold Lot

56

 

10

18%

26

46%

26

46%

22

39%

Block 22

 

 

 

 

 

 

 

 

 

 

315 Academy Lot

57

 

16

28%

21

37%

20

35%

20

35%

 

3

 

0

0%

0

0%

1

33%

1

33%

Chamber

80

 

5

6%

8

10%

5

6%

4

5%

Block 23

 

 

 

 

 

 

 

 

 

 

Northside Station Lot

100

 

21

21%

38

38%

35

35%

23

23%

 

2005

 

568

28%

764

38%

773

39%

608

30%

Sum

2306

 

678

29%

882

38%

910

39%

700

30%

 

Map 3 illustrates the observed parking occupancies at a peak hour in the downtown focus area.  This map is used to cross reference the calculated parking demand to determine if blocks with shortages actually have full or nearly full parking areas.   The peak hour occupancy time occurred between 1:00 P.M. and 3:00 P.M.

 

Map 3

Table 2E (below) demonstrates the relationship between on-street and off-street parking.  The shape of the curve, peaking around noon, is typical for a downtown with a diverse economic base including retail, offices and restaurants.  On-street parking has a tendency to be better utilized since it is preferred by customers and visitors.  However, the off-street parking is virtually as well utilized, indicating that customers in Cary are also using the off-street parking resources.

 

Employees sometimes present an issue to parking system.  Requiring parking that is reasonably close; employees may have a tendency to use on-street parking if the threat of receiving a ticket is low or if the fine rate is too low.  Rich and Associates advocates for consistent daily routine enforcement with a market based fine rate that will deter parking infractions by employees.

 

 

 

Table 2E – On-Street versus Off-Street Parking

 


 

Table 2F (below) demonstrates the relationship between public and private parking.  Important here is the demonstration that private parking experiences less overall occupancy than public parking, demonstrating the shared use nature of public parking.  Private parking is typically reserved for a specific group of users.  Whether the designated users of private parking are specific customers, employees or business owners, the key is that when those individuals are not using the parking it typically sits vacant. 

 

Public parking on the other hand is open and available for a multitude of users, usually only differentiated by the amount of time needed for parking.  Long-term parking is usually encouraged in more remote locations, in order to preserve shorter term parking close to the streets and businesses or other destinations.

 

Cary should endeavor to have as much public parking as possible to take advantage of the increased occupancy and shared use. Public parking serves a greater amount of building space due to shared use than private parking.  The reduced amount of land and other valuable resources dedicated to parking is both more fiscally responsible on the part of the community and helps communities that strive for greater sustainability from an environmental perspective.

 

 

Table 2F – Public versus Private Parking

 


2.4    Parking Demand Calculation

 

Analyses were performed to determine the current and future parking demands and needs for the study area.  The data collected and compiled by Rich and Associates to calculate the parking demand included:

·            An inventory of the study area on and off-street parking supplies.

·            Turnover and occupancy studies for public and private on and off-street parking areas.

·            Block-by-block analysis of the square footage and use of every building in the core study area.

 

Specific parking demand generation ratios are used to calculate parking demand for each block.  These ratios are assigned according to the type of use present in the buildings.  The parking generation ratios were established from surveys distributed to managers, business owners and employees throughout the downtown area and on Rich and Associates past experience.  The surveys helped establish how many people were in a given business at various times of the day, how they arrived and how much parking was necessary to support each business type. (Note: Manager and Employee Surveys are pending and adjustments to the parking ratios based on the results of these surveys may be applicable for future report editions).

 

The demand factors for each land use type include an estimate for employees and patrons to that particular land use.  The overall effect is that each type of downtown visitor, whether an employee, business owner or resident is accounted for in the demand model for Cary. Once parking demand has been calculated for both current and future conditions, a comparison with the existing supply of parking is made.  The resulting figures are parking surplus or deficit figures for each block.

 

The survey method of establishing parking generation ratios customizes the parking generation model specifically to the study area.  The ratios are used in conjunction with information from the Institute of Transportation Engineers (ITE) and the Urban Land Institute (ULI).  These two sources are the generally accepted standards for parking generation. 

 

Once a parking generation model is developed that illustrates the surpluses and deficits of parking numerically and graphically, we then compare the model with actual field observations, specifically the turnover and occupancy counts.  The comparison serves as a test of the demand model and allows Rich and Associates staff to make further revisions or adjustments where necessary to ensure accuracy, as well as to fully understand the overall parking dynamic in the downtown area.

 


 

The assumptions used for the parking demand calculations are:

 

Assumption 1:  It was assumed that parking demand per block was dependent on the gross floor area contained in the block.  Parking demand computed for one block was not affected by the amount of gross floor area available on surrounding blocks.  Therefore, a block with surplus parking supply is not used to offset shortfalls on adjacent blocks.

 

Assumption 2: The parking demand calculations were derived under the assumption that currently occupied properties would remain occupied at existing, or higher than existing levels, into the future. 

 

Assumption 3: Parking demand is not affected by parking availability, use, location and price.

 

 

Table 2G, below, illustrates the specific ratios used for determining parking need.  The ratios are compared with ITE standards as well as Cary Zoning to demonstrate how parking ratios can vary.  Please note that the ratios indicated are preliminary and subject to review based on survey data currently being collected.

 


2.4.1 Parking Demand

 

The following are issues that are considered when developing the number of parking spaces needed:

 

·         Building size, purpose and special use conditions,

·         Socioeconomic characteristics of the downtown populations and visitors of the downtown.

·         Alternative modes of transportation, which include availability, use, attractiveness and policy impacts.

·         Proportion of the downtown trips that are multiple-use or linked.

·         Vehicle traffic.

The demand factors developed for each land use reflect the peak daytime conditions.  This correlates with the observed needs within the downtown. 

 

The gross square footage of individual buildings was collected and then sorted by land use categories (Table G, on the following page).  The different land uses for each block are in general multiplied by a parking generation factor of parking spaces required per 1,000 square feet.  The resulting number of parking spaces demanded is deducted from the available parking supply on each block and a surplus or deficit for each block is then calculated.  Summary tables for the different scenarios are located in Table 2G through K and illustrated in Maps 4, 5 & 6

 

 

 

 

 

 


Table 2G – Existing Building Inventory

 

Block

Mixed

Rest.

FTB

Hotel

Light Ind.

Retail

Service

Specialty

Bank

Office

Gov.

Med. Off.

Church

Community

Post Off.

Vacant

 

Use

(1)

 

 

 

 

 

(2)

 

 

 

 

 

 

 

 

Daytime

3.25

6.87

14.81

0.85

0.75

2.38

2.19

2.99

2.95

2.65

3.90

3.50

0.67

0.55

2.49

3.25

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2

0

0

0

0

0

0

0

4,200

0

3,384

0

0

0

11,379

0

0

3

0

0

0

0

0

0

0

0

0

15,878

0

10,848

0

0

0

0

4

0

0

0

0

0

1,763

10,366

0

0

6,000

0

0

2,500

0

0

0

5

0

0

0

0

0

0

1,750

5,400

25,975

0

0

0

0

0

0

4,000

6

0

0

0

0

0

0

0

0

0

2,700

0

0

0

0

6,900

0

7

2,750

2,200

0

0

0

24,693

5,064

3,000

0

0

0

0

95,000

0

0

4,200

8

56,421

0

0

0

0

13,208

5,400

14,262

0

5,804

0

5,000

114,169

0

0

0

9

5,175

0

0

0

0

25,800

1,050

19,700

0

0

0

0

0

0

0

0

10

0

0

8,100

0

0

7,754

0

0

0

0

0

0

0

0

0

0

11

0

0

0

0

0

4,037

0

0

0

0

0

0

0

0

0

0

12

0

1,925

0

0

7,747

0

9,973

0

0

0

0

0

0

3,873

0

0

13

12,600

0

0

0

0

0

7,500

3,600

0

0

0

0

0

0

0

0

14

21,000

0

0

0

7,754

4,037

16,900

1,500

0

1,400

0

0

0

1,400

0

0

15

0

0

0

0

0

12,400

0

0

16,349

0

0

0

0

0

0

6,300

16

0

0

0

5,984

0

4,000

3,935

19,674

0

0

5,200

0

0

0

0

3,340

17

0

7,000

0

0

12,450

19,000

0

0

0

25,235

0

0

0

2,650

0

3,900

19

0

0

0

0

0

0

0

0

0

0

149,100

0

0

37,507

0

0

20

0

0

0

0

0

0

0

0

0

0

3,535

0

0

0

0

0

21

0

13,096

0

0

0

8,434

0

0

0

8,100

0

0

0

0

0

0

22

0

0

0

0

18,656

0

0

0

0

27,712

0

0

0

0

0

0

23

16,958

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Sum

114,904

24,221

8,100

5,984

46,607

125,126

61,938

71,336

42,324

96,213

157,835

15,848

211,669

56,809

6,900

21,740

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Notes:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1) - Some restaurants uses located in buildings with other use types present are listed under mixed use.

 

 

 

 

 

(2) - Specialty retail and service shops, slightly higher intensity than regular retail.

 

 

 

 

 

 

 

 

(3) - Amtrak total Boardings+Alightings for Cary in FY2006 = 20,682 or 56.6 passengers/day on average (0.32 x 56.6 = 18.1 or 19 parking stalls).

 

 

FTB -Fraternal and other banquet facilities.

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Table 2H – Parking Surplus/Deficit Calculation Worksheet

 

Block

Demand

Future

5 yr.

10 yr.

Parking

Surplus/

Surplus/

Surplus/

 

(current)

Adjust.

Peak

Peak

Supply

Deficit

Deficit

Deficit

Daytime

 

*

Demand

Demand

 

(current)

(5 years)

(10 years)

1

0

0

0

0

0

0

0

0

2

28

0

28

28

91

63

63

63

3

80

0

80

80

161

81

81

81

4

44

0

44

44

59

15

15

15

5

97

0

97

97

158

61

61

61

6

24

0

24

24

140

116

116

116

7

167

0

167

167

144

-23

-23

-23

8

379

0

379

379

363

-16

-16

-16

9

139

0

139

139

187

48

48

48

10

138

0

138

138

39

-99

-99

-99

11

10

0

10

10

0

-10

-10

-10

12

43

0

43

43

88

45

45

45

13

68

0

68

68

49

-19

-19

-19

14

130

0

130

130

102

-28

-28

-28

15

78

0

78

78

80

2

2

2

16

102

0

102

102

185

83

83

83

17

171

0

171

171

234

63

63

63

19

602

0

602

602

847

245

245

245

20

32

0

32

32

145

113

113

113

21

132

0

132

132

135

3

3

3

22

87

0

87

87

157

70

70

70

23

55

0

55

55

100

45

45

45

Sum

2,606

0

2,606

2,606

3,464

858

858

858

 

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

 


Map 4 – Existing Surplus & Deficit Map

 


Table 2I – Future Building Inventory

 

Block

Mixed

Rest.

FTB

Hotel

Light Ind.

Retail

Service

Specialty

Bank

Office

Gov.

 

Use

(1)

 

 

 

 

 

(2)

 

 

 

Daytime

3.25

6.87

14.81

0.85

0.75

2.38

2.19

2.99

2.95

2.65

3.90

1

0

0

0

0

0

0

0

0

0

0

0

2

0

0

0

0

0

0

0

4,200

0

82,641

0

3

0

0

0

0

0

0

0

0

0

27,809

0

4

0

0

0

0

0

1,763

10,366

0

0

6,000

0

5

0

0

0

0

0

0

1,750

5,400

25,975

0

0

6

34,517

0

0

0

0

0

0

0

0

28,588

0

7

39,038

2,200

0

0

0

20,693

1,650

0

0

21,771

0

8

56,421

0

0

0

0

13,208

5,400

14,262

0

42,022

0

9

5,175

0

0

0

0

25,800

1,050

19,700

0

34,304

0

10

0

0

8,100

0

0

0

0

0

0

0

0

11

0

0

0

0

0

0

0

0

0

0

0

12

0

1,925

0

0

7,747

0

9,973

0

0

0

0

13

12,600

0

0

0

0

0

7,500

3,600

0

0

0

14

63,056

0

0

0

0

0

0

0

0

39,792

0

15

33,846

0

0

0

0

0

0

0

16,349

27,077

0

16

72,693

0

0

0

0

0

0

0

0

54,520

5,200

17

0

7,000

0

0

12,450

19,000

0

0

0

25,235

0

19

0

0

0

0

0

0

0

0

0

0

149,100

20

0

0

0

0

0

0

0

0

0

0

3,535

21

65,039

13,096

0

0

0

0

0

0

0

75,879

0

22

36,591

0

0

0

18,656

0

0

0

0

58,303

0

23

16,958

0

0

0

0

0

0

0

0

0

0

Sum

435,934

24,221

8,100

0

38,853

80,464

37,689

47,162

42,324

523,941

157,835

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Notes:

 

 

 

 

 

 

 

 

 

 

 

(1) - Some restaurants uses located in buildings with other use types present are listed under mixed use.

(2) - Specialty retail and service shops, slightly higher intensity than regular retail.

 

 

 

(3) - Amtrak total Boardings+Alightings for Cary in FY2016 = 41,364 or 113.2 passengers/day on average (0.32 x 113.2 = 36.22 or 37 parking stalls).

FTB -Fraternal and other banquet facilities.

 

 

 

 

 

 

 

 


Table 2I (con’t) – Future Building Inventory

 

Block

Med. Off.

Church

Community

Library

Post Off.

Amtrack

Arts

 

 

 

 

 

 

(3)

Center

Daytime

3.50

0.67

0.55

3.18

2.49

0.32

0.49

1

0

0

0

0

0

0

0

2

0

0

0

38,954

0

0

0

3

0

0

0

0

0

0

127,964

4

0

2,500

0

0

0

0

0

5

0

0

0

0

0

0

0

6

0

0

0

0

6,900

0

0

7

0

95,000

0

0

0

0

0

8

5,000

114,169

0

0

0

0

0

9

0

0

0

0

0

0

0

10

0

0

0

0

0

0

0

11

0

0

0

0

0

0

0

12

0

0

3,873

0

0

0

0

13

0

0

0

0

0

0

0

14

0

0

0

0

0

0

0

15

0

0

0

0

0

0

0

16

0

0

0

0

0

0

0

17

0

0

2,650

0

0

0

0

19

0

0

37,507

0

0

0

0

20

0

0

0

0

0

114

0

21

0

0

0

0

0

0

0

22

0

0

0

0

0

0

0

23

0

0

0

0

0

0

0

Sum

5,000

211,669

44,030

38,954

6,900

40

127,964

 

 

 

 

 

 

Pass.

 

 

 

 

 

 

 

 

 

Notes:

 

 

 

 

 

 

 

(1) - Some restaurants uses located in buildings with other use types present are listed under mixed use.

(2) - Specialty retail and service shops, slightly higher intensity than regular retail.

(3) - Amtrak total Boardings+Alightings for Cary in FY2016 = 41,364 or 113.2 passengers/day on average (0.32 x 113.2 = 36.22 or 37 parking stalls).

FTB -Fraternal and other banquet facilities.

 

 

 

 

 

 
Table 2J – Future Parking Surplus/Deficit Calculation Worksheet
(Daytime)

 

 

Block

Future

Demand

Change In

10 yr.

20 yr.

Parking

Change In

Surplus/

Surplus/

 

Demand

(current)

Parking

Peak

Peak

Supply

Parking

Deficit

Deficit

Daytime

 

*

Demand

Demand

Demand

(approx.)

Supply

(10 years)

(20 years)

1

0

0

0

0

0

0

0

0

0

2

355

28

328

192

355

91

0

-101

-264

3

136

80

56

108

136

161

0

53

25

4

44

44

0

44

44

59

0

15

15

5

97

97

0

97

97

158

0

61

61

6

205

24

181

115

205

140

0

25

-65

7

316

167

150

241

316

144

0

-97

-172

8

475

379

96

427

475

312

-51

-115

-163

9

230

139

91

185

230

187

0

2

-43

10

120

138

-18

129

120

39

0

-90

-81

11

0

10

-10

5

0

0

0

-5

0

12

43

43

0

43

43

88

0

45

45

13

68

68

0

68

68

49

0

-19

-19

14

310

130

181

220

310

102

0

-118

-208

15

230

78

152

154

230

80

0

-74

-150

16

401

102

299

252

401

39

-146

-213

-362

17

171

171

0

171

171

234

0

63

63

19

602

602

0

602

602

847

0

245

245

20

50

32

18

41

50

145

0

104

95

21

502

132

371

317

502

135

0

-182

-367

22

287

87

200

187

287

157

0

-30

-130

23

55

55

0

55

55

100

0

45

45

Sum

4,700

2,606

2,094

3,653

4,700

3,267

-197

-386

-1,433

 

(stalls)

(stalls)

 (stalls)

(stalls)

(stalls)

(stalls)

(stalls) 

(stalls)

(stalls)

 


Table 2K – Future Parking Surplus/Deficit Calculation Worksheet (Evening)

 

Block

Future

Demand

Change In

10 yr.

20 yr.

Parking

Change In

Surplus/

Surplus/

 

Demand

(current)

Parking

Peak

Peak

Supply

Parking

Deficit

Deficit

Evening

 

*

Demand

Demand

Demand

(approx.)

Supply

(10 years)

(20 years)

1

0

0

0

0

0

0

0

0

0

2

192

28

164

110

192

91

0

-19

-101

3

703

80

623

391

703

161

0

-230

-542

4

37

44

-8

41

37

59

0

18

22

5

35

97

-62

66

35

158

0

92

123

6

81

24

57

53

81

140

0

87

59

7

407

167

241

287

407

144

0

-143

-263

8

490

379

112

435

490

312

-51

-123

-178

9

130

139

-10

135

130

187

0

52

57

10

120

138

-18

129

120

39

0

-90

-81

11

0

10

-10

5

0

0

0

-5

0

12

67

43

24

55

67

88

0

33

21

13

45

68

-23

57

45

49

0

-8

4

14

129

130

-1

129

129

102

0

-27

-27

15

85

78

7

81

85

80

0

-1

-5

16

159

102

56

130

159

39

-146

-91

-120

17

187

171

16

179

187

234

0

55

47

19

214

602

-388

408

214

847

0

439

633

20

4

32

-28

18

4

145

0

127

141

21

393

132

261

262

393

135

0

-127

-258

22

100

87

13

94

100

157

0

63

57

23

27

55

-28

41

27

100

0

59

73

Sum

3,604

2,606

998

3,105

3,604

3,267

-197

162

-337

 

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)

(stalls)


Map 5 – Future Surplus & Deficit Map (Daytime)


Map 6 – Future Surplus & Deficit Map (Evening)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


2.4.2   Conclusions

 

(Conclusions and additional text pending review of building inventory and future projection.)