f$5-23$

A two$-$lane rural highway, four$-$leg intersection will have its stop control replaced by a

signal control. Compute the expected average total crash frequency $($all types, all

severities$)$ after the change for the following conditions:

Expected average crash frequency before change: $23$ total crashes$/$yr

AADT on minor road: $1500$ veh$/$day

AADT on major road: $5000$ veh$/$day

$($a$)$ Determine crash modification factor $($CMF$).$

$($b$)$ The expected crash frequency after replacing the stop sign by a signal, will