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.
ITâS A POSITION many of us have been in. Youâre motoring along, not a care in the world when suddenly youâre stuck in a traffic jam. You mutter and complain but assume that it must be a bad accident or major roadworks. But then, something magical happens and the traffic begins moving again.wo key effects work towards the occurrence of phantom traffic jams: first, denser traffic travels slower; and second, it takes a certain âadjustment timeâ for drivers to react to new traffic conditions.