Question

A developer has applied for a construction permit to build a supermarket at the
southeast corner of an intersection that is formed by a four-lane divided highway in the eastwest
direction with speed limit 50 mph and a two lane road in the north-south direction. Traffic
on the two-lane road is controlled by a stop sign at the intersection. Using the sight triangle
requirements at the intersection, determine whether permission should be given for the
construction if the following conditions exist. AASHTO assumes that the decision point or
vertex of the sight triangle is 14.5 ft from the edge of the major road traveled way.
Major road lane width=12ft
Minor road lane width=12ft
Median width=6ft
Design vehicle on minor road is a passenger car. Length=22ft
Approach grade=5%
Max feasible distance of building from the center of the nearest lane of the four-lane road =19ft
(due to available land restriction)
Max. feasible distance of building from the center of the nearest lane of the two-lane road=21 ft
(due to available land restriction)

Answer 1