SR 05:070 - Laserfiche WebLink

So in the LOS B peak hour scenario, the 2,500 drivers take an average o~' 52 seconds to afve the approaches to the intersection, experiencing an average of 20 seconds of delay per vehicle. · The average driving speed is reduced to i9 MPH. · The average driving time increases to 52 seconds. · The average delay is 20 seconds per vehicle. · The average traffic backup is seven cars long (170 feet). · The average fuel economy drops to 14.0 miles per gallon. · The vehicles generate i 0.7 pounds of automotive emissions for a base rate of 5.6 tons per year per 10,000 peak-hour vehicles. LOS B SCENARIO MODEL SUMMARY TABLE Travel Time Delay Time Average Average Total Travel Distance Number of Cars per Car in per Car in Speed Traffic Hours of Time Traveled Seconds Seconds ~VIPH) Backup Delay (Hours} {Miles} Baseline 30 MPH 900 32 0 30 None 0 8 244 LOS A 900 40 8 25 18 feet 2 10 244 (30% of Capacity) LOS A/B (54% of Capacity) 1,800 44 12 22 62 feet 6 22 488 LOS B (73% of CalJaci~ 2,500 52 20 19 170 feet 14 36 678 +39% +18% +65% -14% +133% +64 +39 Gallons of Fuel Fuel Economy CO Emissions Nox Emissions VOC Emissions Consumed (MPG) (Pounds) (Pounds) (Pounds) Baseline 10 24.3 1.54 0.31 0.35 LOS A 14 17.5 2.14 0.42 0.51 (30% of Capacity) LOS A/B 32 15.4 4.89 0.95 1.15 (54% of Capacity) £05B 49 14.0 7.50 1.46 1.74 (73% of Capacit22) +53% -9% +53% +53% +52% LOS C - 2~860 Drivers Scenario Driving Conditions (About 82 Percent of Capaci~, ) The model was reran to show what happens if the traffic volume increases by another 360 vehicles per hour, to a total of 2,860 vehicles per hour. This represents the middle of LOS C conditions with 27 seconds of delay per vehicle. Half of the traffic was placed on the north/south street and half on the east/west street. The intersection used in these examples has a capacity of about 3,540 vehicles per hour, so these LOS C conditions represent traffic flow at about 82 percent of the intersection's capacity. The following exhibit is a screen capture from the City's traffic simulation model. It shows the intersection as a two-phase traffic signal with the light just having turned green for north/south traffic. 9