Drivers of company vehicles could face “four-figure fines” if they leave their engines running while parked, under new calls from a council leader.
The fine is £20 or £80 depending on which regulations the authority uses to enforce the law.
Local authorities are currently unable to impose penalties unless drivers ignore an initial warning and remain stationary for at least another minute.
Westminster City Council leader Nickie Aiken told The Times: “Fines are our last resort but when we establish a pattern of persistent idling, we need to be able to send a message.”