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.
1 filter lane-The lane of traffic reserved for those making a specific turn at the next junction. 2  reverse commute-To travel to work opposite of the normal rush of traffic. 3  traffic calming-The deliberate slowing of traffic in residential areas, with speed bumps or other obstructions.