central eastside industrial district parking assessment ... · 2018 central eastside parking data...

Prepared by:

PO Box 12546

Portland, Oregon 97212

Rick Williams, Principal

Owen Ronchelli, Project Manager

J.Connor Williams, Data Specialist

2018

Central Eastside Industrial District

Parking Assessment and Permit Analysis

Summary

August 20, 2018

Prepared for:

City of Portland

Bureau of Transportation

1221 SW 4th Ave

Portland, OR 97204

2018 CEID On-Street Parking Summary

1

Key Outcomes

2016 vs. 2018

• More stalls sampled in

2018 (2,274 vs. 1,759 in

2016).

• Increase in number of 2

Hour stalls analyzed –

particularly “or by

permit” in Zone G

(1,010 vs. 554 in 2016).

• Significant drop in

average hourly

occupancies in all

surveyed hours in

2018 (-9.6 percentage

points versus 2016).

• “Or by Permit” stalls

86.1% occupied (2018)

versus 96.9% (2016).

• 908 permits displayed

in peak hour (2018) vs.

692 (2016).

• Recommended

decrease in 2019

permit allocations to

0.63 FTE (from 0.70).

• Violation rate is 31%

(2018) vs. 25% (2016).

2018 Central Eastside Parking Data Summary

Occupancy/Utilization/Permits

I. Introduction

This data summary report presents initial findings of the 2018

Central Eastside Industrial District bi-annual data collection effort.

Data from this study is contrasted, where applicable, to findings

derived in 2016. Methodologies for collected data were identical for

each of the two survey years; including cataloguing hourly license

plate data for 2,274 parking stalls over a 12-hour study day and

cataloguing all permit use (by displayed permit) over the same

period. The 2018 survey was conducted on Wednesday, April 3, 2018.

The 2016 study was conducted on Tuesday, October 11, 2016.1

II. Surveyed Parking Inventory

Per the recommendation of the Central Eastside Transportation and

Parking Advisory Committee (TPAC) the 2018 parking survey data

collection day and routes were adjusted from 2016. The intent of the

TPAC for these alterations was to ensure that new areas of the

district were sampled and seasonal variations were accounted for;

creating a more robust data base for analysis and greater district

representation. Error! Reference source not found., next page,

displays the selected 2018 study area. For contrast, Figure B (page

3) displays the 2016 study area.

III. General Consideration

Because data was collected within an amended study area and in

spring rather than fall; variations in findings between the two study

years could be influenced by these factors. Nonetheless, the ability

for the City and TPAC to view the comparative findings is instructive

and does begin to establish a more representative view of the

parking dynamics in the district.

1 As 2016 was a 10-hour survey, when making analytical comparisons, the common 10-hour survey periods are used for each study year.


2

Figure A: 2018 Project Study Area (Data Collected April 2018)


3

Figure B: 2016 Project Study Area (Data Collected October 2016)


4

IV. Inventory

Table 1 provides a detailed breakout of the 2018 surveyed inventory with comparison to 2016.

• 2018 sampled 2,274 stalls; 515 more stalls than in 2016 (1,759).

• The use type most affected by the increase in stalls surveyed were 2 Hour stalls; increasing from

1,514 (2016) to 1,826 (2018). Within this category, Zone G was most affected with its sample

size rising from 554 (2016) to 1,010 (2018) stalls.

• The number of No Limit stalls sampled increased significantly in 2018, from 92 (2016) to 220

stalls. Of that total, 166 are located in the neighborhood buffer zone. It is the goal of the

CEID/TPAC to eliminate No Limit stalls located outside the buffer zone.

Table 1: 2018 Parking Inventory (comparative to 2016)

(2016 in parentheses)

Use Type All

(2016) %

Total Metered

(2016) %

Total Signed (2016)

% Total

Or by permit (2016)

% Total

Zone G (2016)

Zone N (2016)

TOTAL: Supply Studied2

2,274 (1,759)

100% 260

(133) 11%

472 (549)

20.8% 1,289 (981)

57% 1,010 (555)

278 (426)

15 Minutes 20

(44) 0.9%

0 (0)

0% 20

(44) 0.9%

0 (0)

0% 0

(0) 0

(0)

20 Minutes 2

(3) 0.1%

0 (0)

0% 2

(3) 0.1%

0 (0)

0% 0

(0) 0

(0)

30 Minutes 122 (80)

5.4% 0

(0) 0%

122 (80)

5.4% 0

(0) 0%

0 (0)

0 (0)

1 Hour 12

(11) 0.5%

0 (0)

0% 12

(11) 0.5%

0 (0)

0% 0

(0) 0

(0)

2 Hours 1,826

(1,514) 80.3%

258 (125)

11.3% 280

(409) 12.3%

1,288 (980)

56.6% 1,010 (554)

278 (426)

4 Hours 27 (6)

1.2% 0

(6) 0%

27 (0)

1.2% 0

(0) 0%

0 (0)

0 (0)

Government Vehicles

Only

7 (0)

0.3% 0

(0) 0%

7 (0)

0.3% 0

(0) 0%

0 (0)

0 (0)

ADA accessible3

5 (5)

0.2% 2

(2) 0.1%

2 (2)

0.1% 1

(1) 0%

1 (1)

0 (0)

No Limit4 220 (92)

9.7% 0

(0) 0%

0 (0)

0% 0

(0) 0%

0 (0)

0 (0)

Unknown5 33 (0)

1.5% 0

(0) 0%

0 (0)

0% 0

(0) 0%

0 (0)

0 (0)

2 This row does not total to 2,274 as 253 stalls are either No Limit or Unknown and cannot be distributed in stall type categories of metered, signed, or by permit. As such, they are only represented in the “All” column of this table. 3 ADA accessible stalls are designated at 2 hour time-stay spaces. 4 No Limit stalls are considered unrestricted and not signed nor metered. 5 Unknown stalls are stalls under construction.


5

V. Occupancy

Figure C identifies differences in hourly parking occupancies between the two study years. Figure D

(page 11) provides a block-face level “heat map” view of the peak hour (11:00 AM – 12:00 PM) for the

entire sampled study area.

• The 2018 peak hour shifted to 11AM versus 1:00 PM in 2016.

• The 2018 peak hour occupancy was 77.9% as compared to 88.9% in 2016. This is a significant

drop, but may be reflective of the seasonal difference between the two survey years and or the

dynamics of the reconfigured data collection zones.

• 2018 occupancy levels are lower than 2016 occupancies in all of the commonly shared 10 hours

surveyed.6 The average hourly drop is 9.6 percentage points.

• As in 2016, overall use of the on-street supply declines in each hour after 1:00 PM.

Figure C: On-street Occupancy – Comparative Hourly Counts 2016 vs. 2018 - (data collected April

2018) 7

6 See Footnote 1, page 1. 7 As indicated in Footnote 1, the 2018 data collection period was 12 hours. When comparative analysis between the study years is discussed it is for the common 10 hour data collection period shared by both study years (i.e., 8:00 AM – 5:00 PM).


6

VI. Utilization

Table 2 provides a breakout of key utilization metrics by stall type. These include peak hour, peak

occupancy, empty stalls, average length of stay and violation rate. Comparative results between 2016

and 2018 are provided (with 2016 findings in parentheses). Key findings include:

• Peak hour occupancies for all stalls are down 11percentage points (77.9%) compared with 2016

(88.9%).

• Overall violation rates are also up by 5.6 percentage points to 30.5%. Nearly one in three non-

permit vehicles parked in the study area violated the posted time restriction.

• The 30 Minute stall sample size increased from 80 (2016) to 122 (2018). Occupancies are still

very low (at about 57%). These stalls may still be oversupplied in the district.

• Though only twelve 1 Hour stalls were sampled in 2018; the average length of stay is over 2

hours, reconfirming the 2016 findings that these stalls do not serve user time stay needs.

• The average length of stay for a user of a 2 Hour Metered stall is 1 hour and 51 minutes; with a

violation rate of 16.3%. The average length of stay for a 2 Hour Signed stalls is 2 hours and 59

minutes, with a violation rate of over 40%.

• 2 Hours or by Permit stalls (Zones G & N) have peak hour occupancy rates in excess of 85%;

which is higher than the average peak occupancy for the district (77.3%) Also, despite a high

percentage of users with valid permits, violation rates for non-permit users of these stalls

exceed 30%.

• The sample size of No Limit stalls was greatly increased, from 80 to 220. Peak occupancy for

use of No Limit stalls dropped to 78.2%. Also, the 2018 average length of stay in No Limit stalls

increased by nearly two hours over 2016 (from 4 hours and 59 minutes to 6 hours and 54

minutes). This indicates a higher use by employees and/or out of district users.

Table 2: 2018 On-Street Parking Utilization – Comparative (by time stay designation)


Use Type Stalls

(2016) Peak Hour

(2016)

Peak Occupancy

(2016)

Stalls Available

(2016)

Average Length of

Stay8 (2016)

Violation Rate

(2016)

On-Street Supply

Studied

2,274 (1,759)

11:00 AM – 12:00 PM (1:00 – 2:00 PM)

77.9% (88.9%)

491 (192)

3h 21m (2h 36m)

30.5% (24.9%)

15 Minutes Signed

20 (44)

12:00 – 1:00 PM (multiple hours)

55.0% (45.5%)

9 (24)

N/A (N/A)

8.5% (15.5%)

8 Average length of stay is filtered to show non-permit users only (Government Vehicles, ADA accessible and No Limit exempt).


7

Use Type Stalls

(2016) Peak Hour

(2016)

Peak Occupancy

(2016)

Stalls Available

(2016)

Average Length of

Stay8 (2016)

Violation Rate

(2016)

20 Minutes Signed

2 (3)

4:00 – 5:00 PM (9:00 AM – 6:00 PM)

100% (33.3%)

0 (2)

N/A (N/A)

0% (100%)

30 Minutes Signed

122 (80)

11:00 AM – 12:00 PM (1:00 – 2:00 PM)

56.6% (51.3%)

53 (30)

N/A (N/A)

28.9% (28.9%)

1 Hour Signed

12 (11)

multiple hours (1:00 – 2:00 PM)

83.3% (90.9%)

2 (1)

2h 5m (2h 29m)

37.8% (56.7%)

2 Hours Metered

258 (125)

1:00 – 2:00 PM (1:00 – 2:00 PM)

61.6% (57.6%)

99 (50)

1h 51m (1h 50m)

16.3% (17.0%)

2 Hours Signed

280 (409)

11:00 AM – 12:00 PM (1:00 – 2:00 PM)

81.5% (85.6%)

51 (56)

2h 59m (2h 15m)

40.5% (29.2%)

2 Hours Zone G – OBP

1,010 (554)

11:00 AM – 12:00 PM (11:00 AM – 12:00 PM)

86.1% (96.9%)

139 (14)

4h 35m (3h 30m)

32.9% (21.2%)

2 Hours Zone N – OBP

278 (426)

12:00 – 1:00 PM (12:00 – 1:00 PM)

88.6% (92.5%)

31 (23)

4h 20m (3h 23m)

36.0% (24.4%)

4 Hours Signed

27 (0)

9:00 – 10:00 AM (N/A)

63.0% (N/A)

10 (N/A)

1h 11m (N/A)

3.4% (N/A)

Government Vehicles Only

7 (0)

9:00 AM – 12:00 PM (N/A)

42.9% (N/A)

4 (N/A)

2h 15m (N/A)

N/A (N/A)

ADA accessible

5 (5)

10:00 – 11:00 AM (12:00 – 3:00 PM)

80.0% (80.0%)

1 (1)

3h 9m (3h 23m)

28.6% (N/A)

No Limit 220 (92)

11:00 AM – 12:00 PM (1:00 – 2:00 PM)

78.2% (85.9%)

48 (5)

6h 54m (4h 59m)

N/A (N/A)

Table 3 (next page) provides a summary of key metrics by type of user (all, non-permit and permit)

across a number of utilization metrics. Additional comparisons between the two study years are made

below, as appropriate.

• The average length of stay for each user group in 2018 (e.g., all users, non-permit users, and

permitted and handicap users) increased significantly over 2016. The length of stay for non-

permit users increased from 2 hours and 36 minutes (2016) to 3 hours 21 minutes (2018). Permit

users rose to 8 hours 22 minutes (2018) from 6 hours 14 minutes (2016). This may be reflective

of the year-to-year increase in violation rates that were discussed in Table 2 above.

• In 2018, 3,543 vehicle trips were recorded. This is a drop of 178 vehicles (or 4.3%) as compared

to 2016 (3,721). Of this total, 2,495 (70%) were non-permit trips (e.g., visitors). In 2016, 2,677 of

3,712 vehicles (72%) were non-permit vehicles.


8

• There were 1,048 vehicles with permits observed parking in the on-street supply in 2018 over

the course of the common 10-hour survey days – an increase of just 4permits from the 1,044

observed in 2016.9

• 152 non-permit vehicles were observed moving between stalls over the course of the study day.

In 2016, 391 vehicles were observed. The drop in this type of behavior may be correlated to the

decrease in permits displayed and/or increased use of No-Limit areas by employees (to avoid

cost to park).

• The rate of stall turnover in the district decreased from 2.77 (2018) to 2.33 (2016). Overall, the

low rates of stall turnover are reflective of the industrial zoning in the district and number of

employee permits in use.

Table 3: Other Characteristics of Use - Non-permit vs. Permit User (2018 vs. 2016)


Use Characteristics

2018

All Users (2016)

Non-Permit Users (2016)

Permit Users (2016)

Length of Stay 4h 18m

(3h 37m) 3h 21m

(2h 36m) 8h 22m

(6h 14m)

Vehicle Trips10 3,543

(3,721)

2,495

(2,677)

1,048

(1,044)

Turnover Rate 2.33

(2.77)

2.98

(3.85)

1.19

(1.61)

Permits in OBP stalls at peak hour11 836

(652)

N/A

(N/A)

836

(652)

Permits in time-limited stalls only at peak hour [% occupied stalls]

72

(98)

N/A

(N/A)

72

(98)

Permits in other stalls at peak hour (e.g., No Limit, Govt. Only, ADA).

21

(N/A)

N/A

(N/A)

21

(N/A)

Vehicles moving between stalls12 152

(391)

152

(391)

N/A

(N/A)

Table 4 (next page) summarizes utilization metrics only for stalls that allow a 2 hour time limit (signed,

metered and by permit). These include peak occupancy, user group, vehicle trips, vehicle hours parked,

average length of stay and turnover rate.

9 It should be noted that the total of 1,048 are for those observed within the study zone. This number will be statistically extrapolated to the entire inventory during upcoming discussions of future permit allocations with the City and the TPAC. 10 2018 Vehicle Trips include only those observed during the 10 hour enforcement period (8AM – 6PM) to be consistent with 2016 data. 11 Permits displayed incorrectly are included (e.g., Zone N permits displayed in Zone G or regular non-permit stalls) 12 This is generally a sign of employees moving their car every few hours.


9

• Of all the 2 Hour stalls types only 2 Hour Metered stalls have an average time stay less than 2

hours (1 hour and 53 minutes) for non-permit users.

• 2.0 Hour Metered stalls turnover at 5.33, a very favorable rate of turnover that is

complementary of the industry standard for turnover in visitor areas (i.e., 5.0 industry minimum

target).

• 836 vehicles are parked at the peak hour in 2 Hour or by Permit stalls (Zone G), an 86.1%

occupancy. Of his total, 193 vehicles (23%) are Non-Permit Users (i.e., visitors), up from 150 in

2016. This indicates meaningful demand for access into these areas by visitors.

• 237 vehicles are parked at the peak hour in 2.0 Hour or by Permit stalls (Zone N), an 87.1%

occupancy. Of this total, 71 vehicles (30%) are Non-Permit Users (i.e., visitors), down 55 stalls

from 2016. High permit use (and occupancy over 85%) at these stalls may be in conflict with

visitor needs.

Table 4: 2 Hour On-Street Parking Utilization - Non-permit vs. Permit User (2018 vs. 2016)


Use Type

Stalls

Peak Occupancy

(2016)

User Group13 Users14

(2016)

Vehicle Trips

(2016)

Vehicle Hours

Parked

(2016)

Average Length of

Stay

(2016)

Turnover Rate

(2016)

2 Hours

All

1,826

80.8%

(1,514, 88.5%)

All 1,461

(1,340)

2,861

(3,124)

12,911

(11,866)

4h 31m

(3h 48m)

2.22

(2.63)

Non-Permit 567

(648)

2,187

(2,147)

7,379

(5,695)

3h 22m

(2h 39m)

2.96

(3.77)

Permit 89415

(692)

674

(977)

5,532

(6,171)

8h 13m

(6h 19m)

1.22

(1.58)

2 Hours

Metered

258

52.7%

(125, 57.6%)

All 136

(72)

594

(270)

1,115

(513)

1h 53m

(1h 54m)

5.33

(5.26)

Non-Permit 118

(67)

585

(259)

1,081

(473)

1h 51m

(1h 50m)

5.41

(5.48)

Permit 18

(5)

9

(11)

34

(40)

3h 47m

(3h 38m)

2.65

(2.75)

2 Hours

Signed

280

81.5%

(409, 85.6%)

All 225

(350)

625

(1,212)

1,899

(2,928)

3h 2m

(2h 25m)

3.29

(4.14)

Non-Permit 185

(299)

618

(1,080)

1,845

(2,436)

2h 59m

(2h 15m)

3.35

(4.43)

13 Number of permit users includes permits used incorrectly. 14 Number of users during the peak hour. 15 These are peak permits displayed only in 2 hour stalls. An additional 35 permits are also displayed in other non OBP stall types (e.g., 30-Minute, 1 Hour, 4 Hour, Govt. Only, No Limit and Handicapped stalls, for a total of 929.


10

Use Type

Stalls

Peak Occupancy

(2016)

User Group13 Users14

(2016)

Vehicle Trips

(2016)

Vehicle Hours

Parked

(2016)

Average Length of

Stay

(2016)

Turnover Rate

(2016)

Permit 40

(49)

7

(132)

54

(492)

7h 43m

(3h 44m)

1.30

(2.68)

2 Hours

Or by permit

Zone G

1,010

86.1%

(554, 96.9%)

All 863

(537)

1,253

(934)

7,718

(4,893)

6h 10m

(5h 14m)

1.62

(1.91)

Non-Permit 193

(150)

742

(445)

3,403

(1,560)

4h 35m

(3h 30m)

2.18

(2.85)

Permit 670

(386)

511

(489)

4,315

(3,333)

8h 27m

(6h 49m)

1.18

(1.47)

2 Hours

Or by permit

Zone N

278

87.1%

(426, 92.5%)

All 237

(394)

389

(708)

2,179

(3,532)

5h 36m

(4h 59m)

1.79

(2.00)

Non-Permit 71

(126)

242

(363)

1,050

(1,226)

4h 20m

(3h 23m)

2.30

(2.96)

Permit 166

(266)

147

(345)

1,129

(2,306)

7h 41m

(6h 41m)

1.30

(1.50)


11

Figure D: Combined Peak Hour Occupancy Heat Map (2018)

Updated: 6/27/18 2018 CEID On-Street Parking Summary

12

VII. Permit Activity

Table 5 illustrates permit activity by hour of the day as well as showing the peak hour for each permit type (highlighted in purple).

• The peak hour for permit use occurs at 11:00 AM when 929 permits are displayed in the surveyed supply. At this hour a total of 1,732

vehicles are parked, with 929 permits displayed (or 53.6% all vehicles parked).

• The 11:00 AM peak hour is also the peak hour for use of permits in Zones G and N and for permits associated with publicly owned

vehicles.

Table 5: Permit Use by Hour of Day and Type of Permit (2018)

Permit Type Displayed 7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 PM

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

ADA accessible 2 4 5 9 8 9 9 8 7 7 4 2

General 3 4 7 10 9 6 5 4 8 4 4 1

Zone G 322 408 482 485 491 482 475 454 410 300 181 103

Zone N 58 92 118 124 129 124 122 115 102 81 53 29

Temporary 12 14 19 18 19 18 20 19 19 13 12 8

Carshare 2 4 7 6 7 9 9 6 8 10 6 3

Publicly owned vehicles 2 2 6 6 6 5 4 4 4 3 2 2

Invalid use of Zone G 37 47 72 73 73 70 68 68 59 47 34 22

Invalid use of Zone N 105 139 172 186 187 187 176 171 147 125 75 36

Permits Displayed Incorrectly

142 186 244 259 260 257 244 239 206 172 109 58

Valid Permits Displayed 401 528 644 658 669 653 644 610 558 418 262 148

Total permits displayed 543 714 888 917 929 910 888 849 764 590 371 206

Stalls occupied 981 1,218 1,516 1,635 1,732 1,726 1,714 1,645 1,559 1,380 1,099 987

% of occupied stalls 55.4% 58.6% 58.6% 56.1% 53.6% 52.7% 51.8% 51.6% 49.0% 42.8% 33.8% 20.9%


13

Figure E provides and hourly breakout of displayed permits by permit type.

• Regardless of number of permits displayed, an average of 61% of all permits in use in on-street

stalls are Zone G permits.

• Regardless of number of permits displayed an average of 34% of all permits in use on-street are

Zone N permits.

• Use of Carshare permits increases as a percentage of all permits between 4:00 and 6:00 PM.

Figure E: Hourly Distribution of Displayed Permits by Permit Type (2018)

Figure F (next page) illustrates the hourly distribution of all users (non-permit/permit) over the course

of the survey day.

• There is a great deal of variability in the number of permits in use over the course of the day.

• The number of non-permit users stays fairly consistent between 11:00 AM (803 vehicles) and

6:00 PM (781 vehicles).

• The peak for non-permit users is 1:00 PM when 826 vehicles are parked. This varies by 23

vehicles from 11:00AM to 45 vehicles at 6:00 PM.


14

Figure F: Hourly Distribution of User by Type (2018)

Permit Allocation

Table 6 provides an accounting of the number of permits the City allocates by zone. As the table

indicates, 2018 allocations are defined by two Zones (G & N). In 2018, Zone G permits decreased 3%

from 2016 levels; Zone N permits decreased by 16% due to the attrition of Zone N permits (no new N

permits will be allocated). Guest permits were eliminated and are no longer issued.

Table 6: Permit Allocations Comparison

Year 201816 2016

Permits Zone G Zone N Zone G Zone N

Business 4,969 1,726 5,117 2,043

Guest N/A N/A 135 80

Resident 32 26 52 75

Sub-Total 5,001

(74%)

1,452

(26%)

5,304

(71%)

2,198

(29%)

Total Allocated

6,753 7,502

16 Number of permits issued as of March 15, 2018, within 2 weeks of the data collection day.


15

Table 7 provides the format for estimating current use of permits in the district. The format is based on

2018 findings extrapolated to a larger CEID supply area totaling 7,210 stalls (row 1, column C).

As the table illustrates there are differences in the 2016 and 2018 sample sizes and the distribution of

stalls types. The comparison between the two sample years (rows 1 – 5, columns C and D). The purpose

of this assessment is to establish a measured breakout of the current supply, tracking where permit

users are parking, by type of stall, and using that information to extrapolate the findings to the entire

inventory. A complete inventory of the CEID parking district was conducted in early 2018, so the

extrapolation of permit use to the entire area should be markedly accurate (Table 7, column C).

• There are a total of 4,018 stalls within the entire inventory of stalls where parking with a permit

is allowed (the sum of rows 3 and 4, column C). This represents about 56% of all parking in the

district. The remaining 3,192 stalls (44%) do not allow parking with a permit (row 5, column C).

• 2018 findings indicate there are 929 permits displayed in the sampled supply during the peak

hour (row 9, column A). Of this total 670 are parked in Zone G and 166 in Zone N (rows 6 and 7,

column A). These vehicles are parked in valid OBP stalls (where we want them to be).

• An additional 93 permits were observed in other stall types, where permits are not allowed (row

8, column 8).

• When these 929 permits are extrapolated to the entire parking supply, there are 3,021 permits

displayed during the peak hour on a “typical day (row 9, column C). In 2016, 3,186 permits were

displayed at the peak hour (row 9, column D).17

Table 7: Summary of 2018 Permit Use

A B C D

Observation Sample Size Percent of Sample

Stalls in CES Parking District

2016 Comparison

1 On-street stalls in all Central Eastside N/A N/A 7,210 6,78118

2 On-street stalls surveyed – sample size

2,274 100% 7,210 1,759

3 Stalls signed 2 Hour OBP Zone G 1,010 44.4% 3,264 2,44519

4 Stalls signed 2 Hour OBP Zone N 278 12.2% 754 1,878

5 Stalls where permits are not valid

(WHERE THEY SHOULD NOT BE) 732 32.2% 3,192 2,458

17 Note rows 6 - 8, column C, extrapolate permit use for each permit zone and non-permit area. The sum of these

extrapolations totals 3,021 (row 9, column C). 18 Assumes stall total has not changed since 2014. No updated inventory was completed as part of the 2016 work scope. 19 Extrapolated numbers are based upon the percentage of 2016 stalls sampled. At this time, we know that there are 4,323 signed 2 Hour OBP stalls in the parking district based on changes made to the on-street inventory in 2015 (source PBOT). There is not an updated distribution of those stalls between Zones G & N. As such, RWC used the sample distributions to estimate the breakout by zone.


16

Extrapolation Analysis

6 Permits in 2 Hour OBP Zone G - peak hour

(WHERE WE WANT THEM TO BE)

670 66.3% 2,165 1,704

7 Permits in 2 Hour OBP Zone N - peak hour

(WHERE WE WANT THEM TO BE)

166 59.7% 450 1,172

8 Permits observed in all other stall types

(WHERE THEY SHOULD NOT BE)

93 12.7% 406 310

9 Permits displayed during peak hour and extrapolated to all on-street stalls

929 N/A 3,021 3,186

A CEID goal is to maintain occupancies in all stalls at 84%, as a means to ensure system efficiency

and provide flexibility to accommodate seasonal demand variations and future growth.

Table 8: Observations of Permit Allocation

summarizes the number of Zone G and N permits that would be allocated to support efforts to lower

occupancies in 2 Hour OBP stalls from a current rate of 94% to 84%.

Key findings from Table include:

• The actual “peak occupancy” rate is 94% if the 93 (406 extrapolated) current permits

improperly using non-permitted stalls were to be directed to 2 Hour OBP stalls (row 2, column

A.)

• Currently, 6,695 permits are allocated to businesses in Zones G and N (sum of rows 3 and 4,

column A). The current allocation of permits to businesses is based on 70% FTE.

• Of this total, 4,969 (74%) are allocated to Zone G (row 3, column A). The remaining 1,726 (26%)

are allocated to Zone N (row 4, column A).

• By comparison, in 2016, 5,304 permits were allocated to Zone G (rows 3 and 4, column B) and

2,198 permits to Zone N.

• Float for each zone is very high, ranging from 229% in Zone G to 383% in Zone N (rows 5 and 6,

column A).

• Based on current peak hour occupancies, 695 permits would need to be reduced from current

allocations to bring occupancies in OBP stalls to 84% (row 8, column A).

• To support this finding, the City would need to limit (cap) the total number of permits allocated

to 6,058 (row 9, column A). This would be about 130 more than was recommended in 2016 (row

9, column B).

• If successful, it is estimated that 2,710 permits would be parked in the peak hour in 2019 (row

10, column A) versus the 3,021 permits currently shown in the extrapolated model (row 7,

column A).


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• The FTE allocation model would need to be reduced to 63% versus the current 70% (row 11,

columns A and B).

Table 8: Observations of Permit Allocation

A B

Observation 2018 2016

1 Peak hour occupancy in 2 Hour OBP stalls (Zones G & N) 86% 95%

2 Peak hour demand in 2 Hour OBP stalls if 93 permits now using non-permit stalls are allocated to OBP stalls (406 additional permits extrapolated)

94% 105%

3 Zone G permits allocated and FTE allowance per business 4,969

70% FTE 5,304

85% FTE

4 Zone N permits allocated and FTE allowance per business 1,726

70% FTE 2,198

85% FTE

5 Zone G “float20” based on permits allocated (4,969) / and extrapolated peak hour permits observed (2,165)

229% (4,969/2,165)

311% (5,304/1,704)

6 Zone N “float” based on permits allocated (1,726) / and extrapolated peak hour permits observed (450)

383% (1,726/450)

188% (2,198/1,172)

7 Permits displayed in peak hour @ 94% occupancy (extrapolated) 3,021 3,186

(at 105%)

8 Estimated permits to be reduced (from 6,753) as a strategy to lower peak occupancy in 2 Hour OBP stalls from 94% to 84% (10 percentage points).21

695 1,575

9 RECOMMENDATION: Permit allocation for 2019 6,058 5,927

10 Estimated distribution of permits in use at 2 Hour OBP stalls during peak hour @ 84% occupancy

2,710 2,517

11 RECOMMENDATION: If 6,753 permits (@ 70% FTE) = 94% occupancy in the peak hour, then 6,058 permits (@ 63% FTE) = 84% occupancy

0.63 0.67

Table 9 below illustrates the distribution of permits by zone based on the recommended cap total

(6,058).

20 Float is the relationship between permits allocated and vehicles parked using a permit. 21 This assumes that existing transient parkers would continue to use these stalls. All efforts to decrease occupancies to 84% would be made through reduced permit sales.


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Table 9: Allocation of Permits - Recommendation

ZONE Current Recommended (2019)

G 4,969 (74%) 4,483 (74%)

N 1,726 (26%) 1,575 (26%)

TOTAL 6,75322 (100%) 6,058 (100%)

• If the City capped the number of allocated permits at 6,058, and distributed them based on

current distribution percentages for Zone G (74%) and Zone N (26%), Zone G would be

limited to 4,969 permits, Zone N to 1,452 permits.

Impact of Zone N Elimination on Permit Allocation

If and when Zone N is eliminated it will have an impact on permit distribution in Zone G stalls. Currently

there is a 114 permit differential in the number of G Zone permits parking in N Zone stalls (187 Zone G

are parked in N and 73 Zone N are parked in Zone G). When those additional permits are added into the

Zone G 2 Hour OBP stalls; it raises the peak hour occupancy to 103%, which increase the number of

permits that need to be reduced to achieve an 84% occupancy level, from 695 to 1,224. To achieve this

reduction will require a recommended FTE level of 0.57 and a total Zone G allocation goal of 4,069

permits (versus the 4,483 recommended for 2019 in Table 9).

VIII. Summary and Next Steps

Overall, hourly occupancies in the district have decreased since the 2016 survey of the area, at an

average of 9.6 percentage points. Some of this may be attributable to the reconfigured data routes

and/or differences in use patterns between fall data collection (2016) and spring (2018). Nonetheless,

use of Or By Permit (OBP) stalls remains constrained at levels over 85% (but still below 2016 levels).

Some adjustments in permit allocations are necessary to bring occupancy levels in OBP to stated goal

levels of 84% - in the range of an FTE allocation of 0.63 versus the current 0.70. This will ensure an

effective balance between permit use and visitor need.

Violation rates increased between 2016 and 2018, from 25% to 30%. Violation rates in metered stalls

decreased year to year; whereas violation rates in signed stalls increased significantly. It appears that

some reformatting will also need to be evaluated as 1 Hour stalls and No Limit stalls still remain in the

district. No Limit stalls may aid in accommodating the 406 permits parked in stalls not designated for

permit use.

22 Includes 58 (grandfathered) residential permits


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Discussing the recommended parking permit allocations and opportunities to reformat stalls is the

obvious next step after review of these findings with PBOT and the CEID-TPAC.

central eastside industrial district parking assessment ... · 2018 central eastside parking data...

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