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Sub-problem 1a - Page 2 of 4

ID# C501A02

Sub-problem 1a: Analysis of the Existing TWSC Intersection

Step 2. Results

What is the data that is needed for this analysis? We can set up this analysis by compiling data on the existing conditions for use in a standard HCM application using the procedures in Chapter 17 for Unsignalized Intersections. The Two-Way Stop-Control (TWSC) methodology requires typical data, such as:

bullet

peak-hour turning movement volumes

bullet

peak-hour factors

bullet

pedestrian volumes and walking speeds

bullet

lane numbers, widths, and usage

bullet

right-turn flares or channelization

bullet

approach grades

bullet

heavy vehicle data

The volume data for this analysis are shown below in Exhibit 5-10 and Exhibit 5-11.

Exhibit 5-10. Museum Road/Reitz Union Existing Weekday PM Peak Hour Intersection Volumes

Eastbound

Westbound

Northbound

Southbound

Movement

L

T

R

Ped

L

T

R

Ped

L

T

R

Ped

L

T

R

Ped

Volume

111

650

2

250

0

580

52

250

12

0

8

150

60

0

144

250

 

 

Exhibit 5-11. Museum Road/Reitz Union Future Weekday PM Peak Hour Intersection Volumes

Eastbound

Westbound

Northbound

Southbound

Movement

L

T

R

Ped

L

T

R

Ped

L

T

R

Ped

L

T

R

Ped

Volume

379

670

2

250

0

597

178

250

12

0

8

150

204

0

484

250

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