Hi I am looking for someone to point me in the right direction. Our insurer (engineering inspection division) has issued us with advice that we should be using manual chocks on the wheels of any vehicles weighing 3 tonnes or over. They base this on an incident(s) where vehicles of this weight have moved (for whatever reason), gathered sufficient momentum to overrun the automatic chocks on the ramps and ended up falling off the ramp. I have searched for some official guidance on this but cant find anything. Im guessing its in a British Standard somewhere. The insurance inspector cant recall the official guidance - which leaves me stumped. Has anyone in the vehicle industry heard of this? Thanks

On older vehicle lifts installed to BS AU 161 (prior to 1999) manual wheel chocks are necessary for vehicle lifts over 3 tonnes. Post 1999 lifts to BS EN 1493 should have automatic or fixed stops provided irrespective of capacity (100 mm high by the time the ramp is 750 mm from the floor) and there is therefore no requirement for manual chocks however your risk assessment for each vehicle may specify manual chocks where large diameter wheels are fitted which may overrun the automatic / fixed ones fitted.