Consider a freeway with two lanes and capacity of 2000 veh/h/lane, jam density of 60 veh/km/lane...

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Civil Engineering

Consider a freeway with two lanes and capacity of 2000veh/h/lane, jam density of 60 veh/km/lane and a triangularfundamental diagram. Traffic is moving with the flow of 3000 veh/hand the space mean speed of 100 km/h. At 10:00 a.m., a trafficcrash occurs that blocks one lane for half an hour. Using shockwaveanalysis, answer the following questions. a. Draw the space-timediagram with shockwaves and traffic states (trajectories notneeded). [2 marks] b. At time t = 10:30 a.m., Jack enters thefreeway via an upstream on-ramp, which is 20 km away from theaccident location. Does Jack experience congestion? If yes, whattime does Jack start driving at a lower speed? [3 marks]

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3.9 Ratings (774 Votes)

We can put the data given to us in terms of a table with arrivalrate of arrivals in 15 minutes departure rate and number ofdepartures We can calculate Cumulative arrivals and departures andthen calculate queue length So we have the followingFrom 10 to 1030 the vehicles are arriving at 3000 vehhour ieover two lanes From 10 to 1030 one lane is blocked so theavailble lane will operate at See Answer

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