Question

# A Service Station on the north side of the street generated 200 trip ends (50-50 directional...

A Service Station on the north side of the street generated 200 trip ends (50-50 directional split) during the pm peak hour. The adjacent street has a volume of 800 westbound vehicles and 1200 eastbound vehicles during the same peak hour. Eighty percent of the trips are “pass-by”. How many motorists make a left turn when exiting from the single driveway which serves the site?

So given 200 trip ends at 50-50 split.

so 100 trips in and 100 trips out

assume that the pass-by happens from both directions equally

so basically

Trips inbound to site

total trips -100

passby trips -80

so 40 passbytrips + 10 normal trips will come from East and 40passby trips + 10 normal trips will come from west

Same way Trips exiting the site

Southbound right will be 40 passby trips(which came from west)+ 10 normal trips (which came from west) = 50

SBL - this will contain t40 passby trips(which came from east)+ 10 normal trips (which came from east) = 50

see figure below

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