Basic HTML Version
Chapter 6: Timing Processes on One Approach
205
The purpose of this activity is to give you the opportunity to determine the maximum allowable headway
(MAH) for your intersection.
•
Select an MAH
•
VISSIM input file created in Activity #28
•
Phase Termination Analysis Excel template
•
Prepare an Excel spreadsheet that includes the phase termination analysis results and data analysis
outcomes, as well as the results from Task 5. The Excel worksheet should follow the formatting
outlined below:
Tab 1:
Title page with activity number and title, authors, and date completed
Tab 2:
Raw data from the MER file
Tab 3:
Headway data for both lanes
Tab 4:
Headway distribution analysis showing frequency data, frequency plot, and cumulative
frequency plot for one lane
Tab 5:
Data for the phase termination analysis
Tab 6:
Phase termination analysis using template including a summary table containing the number
of occurrences of each termination type
Tab 7:
Summary of phase termination analysis including selection of and justification for the MAH
1. How does increasing the MAH affect the likelihood of a Type 1, Type 2, or Type 3 termination?
2. Describe the differences that you observe in the frequency distributions for queued and non-queued
vehicles from your data analysis.
36
Determining the Maximum Allowable Headway