High Quality Content by WIKIPEDIA articles! The New York City Police Department Highway Patrol, also known as the NYPD Highway Patrol or by the shorthand NYPD HWY, is a specialized unit under the auspices of the NYPD`s Transportation Bureau primarily responsible for patrolling and maintaining traffic safety on limited-access highways within New York City. The NYPD Highway Patrol`s other duties and roles include accident investigations, advanced driver and radar training for NYPD officers, field sobriety testing, dignitary and parade escorts, hazardous material and truck traffic enforcement, anti-drag racing programs, and anti-terrorist checkpoints at key bridges and intersections in the city.