Â© PMA of Georgia 2010. Venting. This concept of the plumbing system breathing (while. conceptually accurate) is somewhat confusing to a. craftsperson when trying to understand specifically what. the purpose of the vent system is.
Definition of traffic jam. : a situation in which a long line of vehicles on a road have stopped moving or are moving very slowly stuck in a traffic jam.
A delayed green light means that traffic stopped on one side of an intersection with a traffic signal get the green light to proceed prior to the traffic on opposite side of the intersection. Traffic on both sides get a green light; the delay just means that one side moves prior to the other.