Infrastructure Strategy | 99
Limits
Corridor
2014 ADT
2034 ADT
South of Cedar Rd
Dominion Blvd.
11,990
14,630
East of Dominion Blvd
Cedar Rd
26,160
31,920
South of Moses Grandy Trail
6,980
8,517
West of Dominion Blvd
Moses Grandy Trail
13,080
15,960
East of Dominion Blvd
Grassfeld Parkway
7,440
9,078
South of Dominion Blvd.
Shillelagh Rd.
2,530
3,087
South of Dominion Blvd.
Scenic Parkway
5,220
6,369
South of Dominion Blvd.
West Rd.
3,220
3,929
South of Cedar Rd.
Cahoon Parkway
10,360
12,641
North of Dominion Blvd.
George Washington Hwy.
4,560
5,564
The ADT volumes are slightly higher on the northern end of the study area, since some
development has already occurred around Cahoon Parkway, Grassfield Parkway, and
Scenic Parkway. A residential development is located off of Cahoon Parkway along with
Cedar Road Elementary School. Development along Grassfield Parkway consists of a Wal-
Mart, Applebee’s, and a few other retail stores. Grassfield High School is located along
Scenic Parkway.
Existing Level of Service
According to the Highway Capacity Manual 2010, a two-lane highway operates at an
acceptable capacity at 3,200 passenger cars per hour (pc/h) for two directions. Multilane
highways with flow rates over 1,400 passenger cars per hour per lane (pc/h/ln) result in
speeds below the highways free flow speed. Level of Service (LOS) is used to categorize
the segments of the corridors. LOS ranges from A through F and is determined by the
density along the roadway. A roadway with a higher density will cause the free flow speed
to decrease which will lower the LOS. The table below describes the existing level of service
based on density for the corridors located in the study area.
Limits
Corridor
LOS
South of Cedar Rd
Dominion Blvd.
A
East of Dominion Blvd
Cedar Rd
N/A
South of Moses Grandy Trail
A
West of Dominion Blvd
Moses Grandy Trail
B
East of Dominion Blvd
Grassfeld Parkway
A
South of Dominion Blvd.
Shillelagh Rd.
A
South of Dominion Blvd.
Scenic Parkway
A
South of Dominion Blvd.
West Rd.
A
South of Cedar Rd.
Cahoon Parkway
A
North of Dominion Blvd.
George Washington Hwy.
A
Table 5: Average daily traffic for key intersections
Table 6: Existing level of service at key intersections
