ST1501-CS160316
ARIZONA
TEXAS
NEW MEXICO
OKLAHOMA
3030 LBJ Freeway, Suite 1660, Dallas, TX 75234
(972) 248-3006 office (972) 248-3855 fax | www.leeengineering.com Page 1 of 3
March 16, 2016
Matt Atkins, P.E.
Vice President
J. Volk Consulting
800 East Campbell Road, Suite 120
Richardson, TX 75081
Re: Traffic Study for City of Coppell Roadways – Belt Line Road, Royal Lane, and Freeport Parkway
Dear Mr. Atkins:
Lee Engineering has completed a planning level capacity analysis for the following segments of Belt Line Road,
Royal Lane and Freeport Parkway:
• Beltline Road from north of IH
635 to Southwestern Boulevard
• Freeport parkway north of IH 635
to W. Bethel Road
• Royal Lane from north of IH 635
to North Point Drive
Figure 1 shows the study area map.
A brief description of the study area
roadway segments is provided below:
Beltline Road – Between IH 635 and
Southwestern Boulevard.
Beltline Road is a six-lane divided
roadway with a posted speed limit of
45 mph. Beltline Road is classified as a
High Speed Boulevard (4-6 Lanes) in the
City of Coppell 2030 Comprehensive Plan.
Freeport Parkway – Between IH 635 and
Bethel Road.
Freeport Parkway is a four-lane divided
roadway with a posted speed limit of
40 mph. Freeport Parkway is classified as
a High Speed Boulevard (4-6 Lanes) in the
City of Coppell 2030 Comprehensive Plan.
Figure 1 study area
Page 2 of 3
Royal Lane – Between IH 635 and North Point Drive.
Royal Lane is a four-lane divided roadway with a posted speed limit of 40 mph. Royal Lane is classified as a
High Speed Boulevard (4-6 Lanes) in the City of Coppell 2030 Comprehensive Plan.
Horizon Year (2035) Traffic Volumes
Lee Engineering worked with the North Central Texas Council of Governments (NCTCOG) to generate Year
2035 traffic volumes for the three project roadway segments. The horizon year daily traffic volumes provided
by the NCTCOG are attached as an exhibit.
The City of Coppell provided a Traffic Impact Analysis (TIA) for the Cypress Waters Mixed Use Development.
Lee Engineering reviewed the traffic count data collected as part of this TIA to develop a D-Factor (Directional
Distribution Factor) and a K-Factor (Peak Hour Factor). A D-Factor of 60% and a K-Factor of 9.5% were used
for this study. These D and K factors were applied to the 2035 daily volumes to estimate the Directional
Design Hour Volumes (DDHV) for each link of each project roadway segment.
Link Capacity Analysis
Link capacity analysis was performed for major roadway links along the project roadways. Based on the
information provided by the NCTCOG, Beltline Road, Freeport Parkway, and Royal Lane are classified as Urban
Residential Principal Arterial with an hourly lane capacity of 850 vehicles.
Link capacity analysis results are presented in Tables 1 to 3.
Table 1: Link Capacity Analysis for Beltline Road
No. Link Between
Intersections Daily Volume DDHV
Link Capacity
Urban
Residential
Volume to Capacity
Radio (V/C)
1 IH 635 and Hackberry 44,986 2,565 850 1.01
2 Hackberry and Dividend 41,391 2,360 850 0.93
3 Dividend and Lakeshore 40,970 2,336 850 0.92
4 Lakeshore and Wrangler 39,355 2,244 850 0.88
5 Wrangler and Airline 49,985 2,850 850 1.12
6 Airline and Southwestern 58,556 3,338 850 1.31
Page 3 of 3
Table 2: Link Capacity Analysis for Freeport Parkway
No. Link Between Intersections Daily
Volume DDHV
Link Capacity
Urban
Residential
Volume to Capacity
Radio (V/C)
1 IH 635 and Wrangler 27,655 1,577 850 0.93
2 Wrangler and Airline 26,516 1,512 850 0.89
3 Airline and Fritz 21,322 1,216 850 0.72
4 Fritz and Gateway 19,178 1,094 850 0.65
5 Gateway and Southwestern 24,688 1,408 850 0.83
6 Southwestern and Bethel 19,299 1,101 850 0.65
Table 3: Link Capacity Analysis for Royal Lane
No. Link Between Intersections Daily
Volume DDHV
Link Capacity
Urban
Residential
Volume to Capacity
Radio (V/C)
1 Gateway and Bethel 22,944 1,308 850 0.77
2 Bethel and Creek view 18,744 1,069 850 0.63
3 Creek view and Northpoint 18,251 1,041 850 0.62
As shown in Table 1, Belt Line Road is expected to operate at poor level of service (over capacity) as a six-
lane divided roadway under 2035 traffic volume conditions. The following improvements should be for Belt
Line Road between Hackberry and Southwestern:
• Widen Belt Line Road to an eight-lane roadway
• Widen the southbound approach at the LBJ Freeway Westbound Frontage Road to provide storage
for the southbound left turn lane at the LBJ Freeway Eastbound Frontage Road
As shown in Table 2 and Table 3, Freeport Parkway and Royal Lane are expected to operate under capacity
as four-lane divided roadways under 2035 traffic conditions.
If you have any questions, please feel free to contact me at (972) 248 3006.
Sincerely,
Dharmesh Shah, P.E., PTOE
Vice President
Firm Registration #F450
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Mobility 2035: The Metropolitan Transportation Plan for North Central Texas - 2014 AmendmentCity of Coppell - Belt Line Road, Freeport Parkway, and Royal Lane - Year 2035 Projected Daily Traffic Volumes
Technical Assistance
I:\Technical Assistance\_Technical_Assistance\Documentation\FY2014-15\Coppell_Lee_Engineering_091715\BeltLine_Freeport_Royal_2035Volumes.pdf
October 2015
LEG END
0 0.25 0.5
Miles
¯
Functional Class
Ramp
Frontage Road
HOV Lane
Principal Arterial
Freeway
Minor Arterial
Collector
REGION 2014 2035 % Change
Population 6,904,428 9,833,378 42
Em ploym e nt 4,374,789 6,177,016 41
MA P 2014 2035 % Change
Population 12,040 18,587 54
Em ploym e nt 54,062 66,025 22
NCTCOG Travel Demand Model Service Volumes (Mobility 2035)
Notes:
1. The upper limit of volume over capacity (VOC) ratio for LOS = A,B,C is 0.65, and for LOS = D,E is
1.0.
2. Provided freeway capacities are only for basic segments. They have to be adjusted for links that
are in weaving sections.
3. Contact NCTCOG if you are using the travel demand model volumes for the VOC analysis to
obtain the required regional vph to pcph adjustment factors.
4. The service volumes are at LOS = E.