“Wasting petrol and worse still, polluting our air unnecessarily.” —B, South London

Trade vehicles, engines running, white van drivers on their mobiles. Private vehicles, the same. Engines running so the heating can keep drivers warm, oblivious to the particulate matter they are pumping out all around them. Wasting petrol and worse still, polluting our air unnecessarily. Drivers are often offended as to why you are asking them to switch off. Sometimes they are quite rude. The law needs to be more harsh on idling engines. A campaign to educate: encourage motorists not to idle - saving their fuel and our air!

B, South London