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 the table below. Study the data presented in the table carefully.
| Section (Time Period 2) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 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 (veh/mi/ln) | 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 the table above, 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.