Item 7C - Threshold WorksheetTraffic Impact Analysis
Title of Plan I Philips Edision Southlake
THRESHOLD WORKSHEET
Case Number ZA21-0059
Driveway Ordinance No. 634 requires that a Traffic Impact Analysis (TIA) be submitted with development applications (zoning,
concept plan, site plan, etc.) if the proposed development exceeds one or more of the three threshold criteria listed below. No
development applications will be accepted unless accompanied by a TIA. For those projects that do not exceed any of the
three criteria, a TIA Threshold Worksheet must be submitted and approved by the City Engineer in lieu of the required TIA prior
to submittal of the development application. Please describe in detail your evaluation of each criteria listed below. Additional
sheets may be attached if necessary.
Criteria #1:The development exceeds parking 100 spaces average per driveway.
The total site has 383 spaces. There are 6 driveways. That equates to 64 spaces per driveway.
Criteria #2:Any driveway in the development is projected to serve 1000 or more vehicles per day.*
Please see the attached worksheet. The change in traffic does not create a significant change in the
traffic counts per driveway.
Criteria #3:Any driveway in the development is projected to serve 100 ingress vehicles or more in the design hour.*
See attached sheet. The increase in traffic does not generate a significant increase in traffic
* Unless approved otherwise, trip generation rates should be based on the most recent edition of the Institute of Transportation
Engineers (ITE) Trip Generation Manual.
I hereby certify that this project does not exceed any of the three threshold criteria shown above and therefore the development
would not warrant a TIA in accordance with Section 3.4 of the Driveway Ordinance No. 634 of the City of Southlake.
Name Clay CrlSty Registration No. 109800
Firm ClayMoore Engineering Phone 817.281.0572 Fax
For City Use Only. The requirement for a Traffic Impact Analysis with this submittal is hereby waived:
Name:
Title:
Date
Date 8/13/2021
Existing Traffic Estimation
Lot 2R-1
Use
ITE Code
Units
Quantity
Vehicles Per Day
PM Peak Ingress
Grocer
850
KSF
63,959
6,834
286
Shopping Center
820
KSF
28,782
2,573
104
Restaurant
932
KSF
5,000
561
30
Lot 4-R
Fuel Station
945
1 Fuel Pos.
10
2,054
64
TOTAL
12,022
484
NUMBER OF DRIVES
6
6
TOTAL CARS PER DRIVE
2,004
81
Proposed Traffic Estimation
Lot 4-R
Use
ITE Code
Units
Quantity
Vehicles Per Day
PM Peak Ingress
Grocer
850
KSF
63,959
6,834
286
Shopping Center
820
KSF
28,782
2,573
104
Restaurant
932
KSF
5,000
561
30
Lot 4-R
Retail
814
KSF
2,450
92
17
Coffee Shop
937
KSF
2,150
1,764
47
TOTAL
11,824
484
NUMBER OF DRIVES
6
6
TOTAL CARS PER DRIVE
1,971
81