transportation engineering 1 answer below »

traffic flow on a four lane(one direction) freeway can be described by the greenshields model. two lanes on a section of this freeway will have to be closed to undertake an emergency bridge repair that is expected to take 2 hours. the mean free speed of the highway is 60 miles/hour and the jam density is 140 vehicle/mile/lane. if it is estimated that the demand flow on the highway during the emergency repairs is 80% of the capacity, determine: 1)the maximum queue length that will be formed 2)the total delay and average individual delay 3)the number of vehicles that will be affected by the incident