Traffic flow on a single lane road is moving with a free flow speed of 40 kph and density of 50 vpk. This flow is stopped for 45 seconds at an intersection controlled by signals.  Assume jam density of 250 vpk. i. What would be the speed and direction of the stopping wave?  ii. What would be the length of the cars stopped?   SHOW COMPLETE SOLUTION. NEED ASAP. THNAK YOU

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