**Please draw all necessary diagrams showing shockwaves.** Due to a road crash, the southbound direction of a 2-lane, 2-way highway was completely closed. Before the event, vehicles were running at 40 kph with density of 20 vpk. It took 35 minutes before the road got cleared again due to road crash investigation, waiting for emergency response team, and clearing of debris. The traffic stream follows Greenshield's model with free flow speed of 50 kph and jam density of 90 vpk. a.) Draw all necessary diagrams showing shockwaves.

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Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.