London cyclists are being offered the chance to sit in HGV lorries parked outside St Paul’s Cathedral to better understand lorry drivers’ blind spots.

The ‘Exchanging Places’ event by The Metropolitan Police aims to reduce risk of death and serious injuries by teaching cyclists safety tips and providing free bike marking. The main advice is to cycle at least six feet in front of a lorry so they are visible and not to cycle in the narrow gap between a lorry and the pavement.

Also at the event were the London Ambulance Service, teaching first aid to cyclists.

A video made by the Metropolitan Police shows a lorry driver and a cyclist swapping places and being taught by a police officer how the two can best communicate through eye contact, clear hand signals and distance.

Watch the video here: