In January 2012, California adopted federal law requiring city's traffic engineers to decrease the pedestrian walking speeds at signalized intersections from 4fps to 3.5fps. Ten signalized intersections along Atlantic Avenue between Spring Street to Carson Street were selected to evaluate impacts due to pedestrian walking speed changes. One hour peak evening volumes were collected and entered into Synchro by Trafficware to compare intersections and approach delays on 75 and 100 seconds cycle lengths with combination of coordinated and uncoordinated systems. Volume growth rate effects, surveyed pedestrian walking speed, and various observed characteristics at signalized intersection crossing were evaluated. Converting pedestrian walking speed from 4-fps to 3.5fps caused the cycle length to increase from 75 seconds to 90 seconds for coordination purposes. The Synchro results, overall, showed more intersection/approach delay, vehicular growth rates data showed a small effect on the major intersections delay when comparing the two walking speeds, and sampled pedestrian walking speeds indicated that the 15th percentile of pedestrians walked at a faster speed than 3.5fps.
|Commitee:||Goitom, Tesfai, Nguyen, Tang-Hung, Parentela, Emelinda, Sciortino, Antonella|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 54/02M(E), Masters Abstracts International|
|Subjects:||Civil engineering, Transportation planning|
|Keywords:||Approach delay, Pedestrain walking speed, Traffic signal timing, Vehicle delay|
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