Vehicle Trip Generation 5-7-04
~
1313 5th Street SE
Minneapolis, MN 55414
phone 612.379.3844
fax 612.379.3845
www.trafficdatainc.com
mspack@trafficdatainc.com
Data Collection
Traffic Engineering
Transportation Planning
---------------------------------- ~
Memo
To: Jim LaValle, The Velmeir Companies
From: Mike Spack, P.E.
Date: 05/07/04
Re: Vehicle Trip Generation Study for proposed CVS Pharmacy in Minneapolis, MN
cc: Jon Wertjes, City of Minneapolis
Backç¡round
CVS Pharmacy is proposing to build a 13,013 square foot store with two drive-through
windows on the southeast comer of 3th Avenue NE and Central Avenue NE in Minneapolis,
MN. Standard traffic engineering practice for a new development is to forecast the traffic
generated by the development using data contained in ITE's Trip Generation report. The ITE
Trip Generation, 1h Edition contains nationally collected traffic data for the
Pharmacy/Drugstore with Drive-Through Window land use, but the data indicates that only
one of the stores studied had two drive-through windows. City of Minneapolis staff expressed
concem that the national data may not be relevant to the proposed CVS store (and future
CVS stores in Minneapolis). Staff also expressed concern with the lack of data regarding
how many vehicles use the drive-through windows. The purpose of this study is to collect
p.m. peak hour trip generation data and drive-through window usage data at pharmacies that
have two drive-through windows.
Methodoloav
There are currently no operating CVS Pharmacy stores in the Twin Cities metropolitan
region. City of Minneapolis staff agreed that data collected at urban Walgreens
Pharmacy stores that have two drive-through windows would give comparable traffic
data.
TDI staff identified six urban Walgreens stores in the Twin Cities that have approximately
14,000 square feet and two drive-through windows. The number of vehicles entering
and exiting the Walgreens stores were collected in 15 minute intervals between 4:00
DBE Certified in Minnesota
Jim LaVelle
CVS Pharmacy Trip Generation
Page 2
p.m. and 6:00 p.m. The data is attached in Table 1. The peak hour traffic was
calculated based on the data in Table 1. Summaries of the peak hour trip generation
data is shown in Figures 1 and 2.
The total number of vehicles using the drive through along with the longest queue in one
drive through window was collected for each period. The pharmacy traffic is a subset of
the number of vehicles entering and exiting the site. The drive-though window data is
shown in Table 1.
Findinç¡s
The average trip generation rate for Pharmacy/Drugstore with Drive-Through Window
(ITE Code 881) is 8.62 trips per 1000 Sq. Feet Gross Floor Area in the ITE Trip
Generation, 1h Edition. The average trip generation rate for the six Walgreens stores
surveyed is 15.22 trips per 1000 Sq. Feet Gross Floor Area. The Trip Generation data
contained one pharmacy that had two drive-through windows and it appears that it
generated 17.46 trips per 1000 Sq. Feet Gross Floor Area. The rest of the pharmacies
generated significantly less traffic. The average trip generation rate of 15.22 trips per
1000 Sq. Feet Gross Floor Area calculated by this survey seems reasonable.
The drive through window data shows a maximum queue of 3 vehicles waiting at a drive-
through lane at anyone time.
Customer sale and drive-through data is attached in Table 2 from CVS Pharmacy stores
in the Chicago, IL metropolitan area. The trip generation rate from 5:00 p.m. to 6:00 p.m.
is approximately 13 trips per 1000 Sq. Feet Gross Floor Area. The average number of
vehicles using the drive-through windows during the same period is ten vehicles. This
data is consistent with the data collected from the Walgreens Pharmacy stores.
Jim LàVelle
CVS Pharmacy Trip Generation
Page 3
. -~~_r.:'. .:-~.,,- .;--~ "~",-_,,-__ .-,,_...,.- ~.," -. ;;~_ _ .:~ ."'.>.-
Table 1 - Walgreens Pharmacy Store Data
01'-'0 ,hC-""'l ~_'-,'_H c' ,~_C - - ._" -- '
i
. DATE:
4f7104
LOCATION
540 Blake Road
St. Louis Park, MN
14,000 Sq Ft Estimated
3700 Silver Lake Rd
St. Anthony, MN
14,490 Sq Ft
1401 E Maryland Ave.
St. Paul, MN
14,000 Sq Ft Estimated
1768 Old Hudson Road
St. Paul, MN
14,000 Sq Ft Estimated
1665 White Bear Ave.
St. Paul, MN
14,000 Sq Ft Estimated
4547 Hiawatha
Minneapolis, MN
13,900 Sq Ft
4/8/04
4/8/04
4/8/04
4/13/04
4/13/04
" '! '
TIME PER lob
4:00-4:15 PM
4:15-4:30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
4:00-4:15 PM
4:15-4;30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
4:00-4:15 PM
4:15-4:30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
4:00-4:15 PM
4:15-4:30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
4:00-4:15 PM
4:15-4:30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
4:00-4:15 PM
4:15-4:30 PM
4:30-4:45 PM
4:45-5:00 PM
5:00-5:15 PM
5:15-5:30 PM
5:30-5:45 PM
5:45-6:00 PM
-STO'R'EìRAFFlC - -<-"f"ÞHÄ1UiÂCTIRÄFFlC
'. I . 1-1 I
. I' . . Longest
In Out I TOTAL I Total Queue
37 44 81 6 2
40 37 77 8 2
34 34 68 6 1
28 28 56 5 2
36 40 76 9 3
27 32 59 5 2
36 37 73 8 2
26 31 57 4 1
25 22 47 5 2
35 26 61 4 2
25 32 57 6 2
27 21 48 1 1
30 25 55 3 1
29 25 54 2 1
15 18 33 3 2
16 21 37 2 1
24 29 53 6 1
28 23 51 3 1
26 24 50 3 2
24 27 51 8 3
26 31 57 5 1
35 34 69 4 2
35 31 66 4 1
21 22 43 6 2
23 21 44 1 1
20 25 45 3 1
10 20 30 1 1
19 15 34 2 1
17 15 32 2 1
25 26 51 0 0
20 21 41 2 1
10 14 24 2 1
13 10 23 1 1
13 13 26 1 1
10 15 25 0 0
11 11 22 2 2
9 14 23 1 1
11 10 21 1 1
10 9 19 1 1
10 12 22 1 1
33 37 70 5 2
26 36 62 3 1
31 22 53 5 2
28 28 56 3 1
34 40 74 5 1
40 43 83 7 3
31 32 63 5 1
35 29 64 8 3
Jim LaVelle
CVS Pharmacy Trip Generation
Page 4
Pharmacy/Drugstore with Drive-Through Window (ITE Code 881)
Average Vehicle Trip Ends vs: 1000 Sq. Feet Gross Floor Area
On a: Weekday,
Peak Hour of Adjacent Street Traffic
One hour Between 4 and 6 p.m.
Number of Studies: 6
Average 1000 Sq. Feet GFA: 14
Directional Distribution: 50% entering, 50% exiting
Trip Generation per 1000 Sq. Feet Gross Floor Area
Averge Rate Range of Rates
15.22 6.86 - 20.42
Standard Deviation
5.31
Data Plot
300
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13.8
13.9
14
14.1
14.2
14.3
14.4
14.5
14.6
x = 1000 Sq. Feet Gross Floor Area
Fitted Curve Equation: Not given
~ = ****
Jim LaVelle
CVS Pharmacy Trip Generation
Page 5
Pharmacy/Drugstore with Drive-Through Window (ITE Code 881)
Average Vehicle Trip Ends vs: Drive-Through Window
On a: Weekday,
Peak Hour of Adjacent Street Traffic
One hour Between 4 and 6 p.m.
Number of Studies: 6
Average Number of Windows: 2
Directional Distribution: 50% entering, 50% exiting
Trip Generation per 1000 Sq. Feet Gross Floor Area
Averge Rate Range of Rates
107.00 48.00 - 142.00
Standard Deviation
37.06
Data Plot
2.5
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0 50 100 150 200 250 300
T = Average Vehicle Trip Ends
Fitted cUlve Equation: Not given
R2 = ****
Jim LaVelle
CVS Pharmacy Ttip Generation
Page 6
Table 2- CVS Pharmacy* Trip Generation Data
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Chicago, IL Urban 5 8 37 74
Chicago, IL Suburb 7 1 1 . 45 86
Chicago, IL City 4 10 60 91
Chicago, IL Urban 3 7 53 84
Chicago, IL Suburb 6 9 42 68
Chicago, IL City 9 12 51 102
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* Each store is approximately 13,000 square feet and has two drive-through windows.
**Each transaction is one payment, i.e. someone buys gum, shampoo, prescription and pays with one
check, that is one transaction. Neither the total dollar amount nor the number of items purchased matters.
This data assumes each person buying something equals one car in the parking lot.