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]
