Briefly describe the different shock waves that can be formed and the traffic conditions that will result in each of these shock waves.
What will be an ideal response?
Shock waves include frontal stationary, backward forming, backward
recovery, rear stationary and forward recovery shock waves. Frontal stationary
shock waves occur when capacity is reduced to zero and upstream demand
continues. Backward forming shock waves occur when capacity is reduced below
the demand flow rate but not to zero. Backward recovery shock waves form when
capacity is restored or increased to a value greater than the upstream demand. A
rear stationary shockwave occurs when a restricted downstream capacity is
increased to a value above the queued demand, thereby dissipating the queue from
through a forward recovery shock wave.
You might also like to view...
If the humidity ratio in the 3000-m3 classroom of Problem 1 is reduced to 0.015 kgw /kga while maintaining the temperature, the mass of water in the air is found, using the equations, to be nearest:
A) 39 kgv B) 41 kgv C) 43 kgv D) 45 kgv
The term MOST-Likely used to describe a worldwide radio-navigation system formed from a constellation of 24 satellites and their ground stations is:
A. GPS B. OSS C. squib D. tweeter
The high voltage batteries are designed to be charged no more than _______
A) None of these B) 60 % C) 80 % D) 100 %
The static pressure at the expansion tank connection when the system is filled is based on the height of the system piping above the expansion tank, the type of fluid used, and a customary allowance for ____ psi pressure at the top of the system for proper operation of the air vents.
a. 1.5 b. 3.33 c. 5.0 d. 7.5