A school zone(20 mph) of mile length is located on a 40 mph highway. Stream measurements

A school zone(20 mph) of ¼ mile length is located on a 40 mph highway. Stream measurements at various sections upstream, middle of the school zone, and just downstream of the school zone are respectively as follows: Approaching zone : q A = 1000 veh/hr, vA = 40mph Middle of zone : q B = 1100 veh/hr, vB = 20mph Downstream of zone: q C =1200 veh/hr, vC = 30mph Sketch the q-k-v curves and indicate critical values. Calculate the intensity and direction of the shock waves created by the speed zone and the time required to disperse it?(Assume the speedzone restrictions operate for only 15 min during morning and evening periods).