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1. (3 pts) From the following identify the incorrect statement(s) about the all

ID: 1713744 • Letter: 1

Question

1. (3 pts) From the following identify the incorrect statement(s) about the all red clearance interval at a signalized intersection A. The purpose of a red clearance interval is to clear the road of the pedestrians B. The red clearance and yellow interval durations are inversely related, i.e., the longer C. The grade of an intersection approach has an influence on the duration of the all red E.All of the above the yellow change interval the shorter the red clearance interval pproach clearance interval for thata None of the above 2. (3 pts) Which of the following is the most accurate and most likely assumption about the traffic flow in a certain phase during the effective green time? Traffic flow can reach saturation flow rate Traffic flow is zero C. Flow exceeds the capacity D. Flow is well below the capacity for the whole duration E. None of the above 3. (4 pts) A cyclist is traveling northbound and just entered a wide signalized intersection when the yellow indication turns on and the green indication will start for another movement after a short Y+AR. There are left tuning bays in all four approaches. What is the most dangerous event? A. The green indication starts for eastbound thru traffic Q The green indication starts for westbound thru traffic C. The green indication starts for southbound thru traffic D. All of the above are equally dangerous

Explanation / Answer

1) Option E is correct. All the above statements regarding the all red clearance interval are wrong.

2)Option A is correct. In effective green time traffic flow will reach saturation flow rate.

3) Option B is correct. The green indication starts for westbound thru traffic.