Queue
Warning (Q-WARN)
•Queue warning (Q-WARN) aims to provide drivers timely warnings
and alerts of impending queue backup.
–To reduce shockwaves and prevent collisions and other secondary
crashes
–Predict location, duration and length of queue propagation
–Utilize V2V and I2V communication for rapid dissemination and
sharing of vehicle information
▪E.g., position, velocity, heading, and acceleration of
vehicles in the vicinity
–Allows drivers to take alternate routes or change lanes
–Applicable to freeways, arterials, and rural roads
