Traffic engineering homework

timer Asked: May 1st, 2020

Question Description

Please if you don’t know how to do it leave it..... it’s a civil engineering class.. solve the homework in a word doc and make sure your solution is corr

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TRAFFIC ENGINEERING Assignment #5 University Avenue is an arterial connecting two regional centers of a large metropolitan area. A signal progression study is to be undertaken for eight intersections starting from the one with University and Snelling. The signal cycle lengths are all 60 sec with a uniform green split of 60/40% favoring the University Avenue. The speed limit is 30 mph. Draw a time-space diagram by adopting horizontal scale 1" = 600' for distance and vertical scale of 1" = 40 sec of time. (1) Is there a green bandwidth for moving through all the intersections in each traffic direction with the initial Offsets shown below? To improve the signal coordination, you need to develop a balanced progressive signal control plan. If the same cycle length, green splits, and speed limit are to be maintained, calculate and draw a new time-space diagram based on the results of the balanced progressive plan with the center of the green interval at Snelling adopted as the bench-mark. (2) What is the maximum bandwidth in BOTH traffic directions after the improvement? (3) Mark the reference line and show the new offsets as a result of the signal progression improvement. Show the green time and red time at each intersection based on the new offsets and draw the green band in both directions. (Note: it is OK to draw the green band only for a couple of cycles and for a few intersections if you do not have more time to draw the entire picture.) Cross Street A. B. C. D. E. F. G. H. Snelling Lexington Dale Broad Mclean Central Fairview Victoria Distance between Street 0 ft 870 800 1310 610 1450 400 240 Total = 5680 feet Initial Offsets 0 sec 0 50 10 30 20 40 40 ...
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