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.
Traffic Jams Cost Americans $124 Billion in 2013. A new study from the London-based Centre for Economics and Business Research aims to put a price on trafficânow, and in the near future.