A traffic signal control is being designed for a four leg

Last updated: 3/2/2023

A traffic signal control is being designed for a four leg intersection on a divided highway with the characteristics shown in the table below G G Determine the minimum green times in s for each approach if the effective crosswalk width in each direction is 8 ft and the number of pedestrians crossing during an interval is 35 in the N S direction and 38 in the E W direction Assume the average speed of pedestrians is 3 5 ft s and that it is feasible to disregard the yellow change and red clearance intervals min N S min E W Median width ft Number of 12 ft lanes on each approach Design speed mph Grade S N S Approaches E W Approaches 16 12 3 2 50 40 0 3 S