Back Next

HCMAG Home
Overview
Introduction
Getting Started
Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem Index
Datasets
Search

Sub-problem 4c - Page 4 of 7

ID# C404C04

Sub-problem 4c: Peak Operational Analysis of Alternate Route 7

Let's now consider time period 2, the second 15-minute period during the PM peak period. The results for time period 2 are shown in Exhibit 4-73. Study the data presented in the Exhibit carefully.

Exhibit 4-73. Performance by Location for the Second 15 Minutes of PM Peak Period
Section (Time Period 2) S1 S2 S3 S4 S5

S6

 S7 S8 S9 S10 S11
Length (ft) 3,675 670 1,025 775 1,890 10,900 1,500 3,100 1,115 1,500 2,000
Number of lanes 2 4 2 4 3 2 2 2 2 4 4
Type (B,W, ONR, OFR) B W B ONR B B OFR B ONR ONR B
Free flow speed (mph) 55 55 55 55 55 55 55 55 55 55 55
Speed (mph) 55.0 33.3 49.5 25.8 19.2 49.8 49.4 54.9 48.9 54.3 55.0
Density (vpmpl) 19.5 25.7 21.2 44.9 75.8 44.0 39.4 28.4 31.3 26.1 26.2
Segment Capacity (vph) 4,375 5,020 4,375 8,750 6,565 4,375 4,375 4,375 4,375 8,750 8,750
Segment Demand (vph) 2,150 3,425 2,100 4,850 4,850 4,850 4,850 3,460 3,880 6,090 6,090
Segment Volume (vph) 2,150 3,425 2,100 4,640 4,375 4,375 4,375 3,120 3,540 5,750 5,750
d/c ratio 0.49 0.68 0.48 0.55 0.74 1.11 1.11 0.79 0.89 0.70 0.70
v/c ratio 0.49 0.68 0.48 0.53 0.67 1.00 1.00 0.71 0.81 0.66 0.66
Minute Queue Begins in Segment     9 1            
Minute Queue Ends in Segment     ** **            
Queue Length at End of Time Period (ft)     745 1,890            

Discussion:
As you review the data in Exhibit 4-73, what differences do you see between these results and those from time period 1? What is the most important information you learn from this table? When you are ready, proceed to the next page.

[Back] [Continue] with Sub-problem 4c