Drivers about for in of off on with central London will soon face a $30 fine if they sit about for in of off on with traffic without turning about for in of off on with their engine. Authorities want to reduce the amount about for in of off on with pollution in England's capital city. The fines could start about for in of off on with May 1. Throughout April, traffic wardens about for in of off on with the London district about for in of off on with Westminster will ask motorists to turn about for in of off on with their car engines if they are not driving. If people do not follow their advice, the new law will start. The fines are because local residents and businesses complained about for in of off on with the air quality about for in of off on with London. Westminster has the second highest proportion about for in of off on with deaths from air pollution about for in of off on with Britain. A spokeswoman, Heather Acton, said: "The council is committed to improving air quality about for in of off on with Westminster." Ms Acton told reporters about for in of off on with the importance about for in of off on with keeping people moving about for in of off on with the roads and reducing air pollution. She said: "Motor traffic plays an important role about for in of off on with keeping our city moving, which is vital about for in of off on with its economic prosperity. We want to raise motorist awareness about for in of off on with the impact engine idling can have about for in of off on with the environment, with air and noise pollution affecting overall health." Not everyone is happy about for in of off on with the new fine. The Institute about for in of off on with Advanced Motorists warned that people could see the fine as a "revenue-raising exercise". It said the traffic wardens should focus about for in of off on with "old buses, coaches, large trucks, utility company vans or taxis idling about for in of off on with long periods" and not about for in of off on with energy-efficient cars.