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.
Sitting in traffic jams will cost families Â£2,000 and waste 18 days-a-year by 2030 as growing population clogs the roads. Annual cost of jams in the UK will soar by 63 per cent to Â£21billion by 2030. Congestion will cost the UK economy Â£300billion over the next 16 years.