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Midterm_2_08_sol

# Midterm_2_08_sol - University of Minnesota CE 3201...

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University of Minnesota Spring 2008 CE 3201 Introduction to Transportation Engineering Dr. Henry Liu 1 Name ID Midterm #2 I. Multiple Choices (4 points for each). Circle one letter in each question for your answer. 1. Assume a linear speed-density relationship, the flow-density relationship is: A: linear B. parabolic 2. The difference between D/D/1 queuing and M/D/1 queuing is that: A. Arrival pattern is different, B. Departure pattern is different. 3. The assumption of Poisson-distributed traffic arrivals is most realistic in: A. Lightly congested traffic condition, B. Heavily congested traffic condition. 4. On a 2-lane freeway, if all cars on one lane move at 15 mph and all cars on the second lane move at 30 mph, then the time mean speed will be smaller than the space mean speed: A. True B. False 5. Level of Service E represents operating condition of a roadway is at or near its capacity. A. True B. False 6. If the peak hour factor (PHF) is closer to 1, then the traffic flow is: A. closer to uniform B. more non-uniform 7.

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