Direct Vision Standard is being introduced by the London Mayor and is currently aimed at HGVs over 12 tonnes to assess and rate how much a driver can see directly from their cab windows. DVS forms part of the Safety Permit for all HGVs being introduced into London using a star system to rate direct vision with scores from 0 for the lowest to 5 for the highest. DVS is created to improve road safety standards for all road users, particularly the vulnerable pedestrians, cyclists and motor cyclists.
The HGV Safety Permit scheme will operate 24 hours a day, 7 days a week with all HGVs over 12 tonnes requiring one to enter or operate within the Greater London Boundary (generally within the area created by the M25). Enforcement will be on all roads within the area from 26th October 2020.
DVS Star Rating is available now from manufacturers for euro IV, V and VI vehicles. Manufacturers should be contacted for the star rating for existing vehicles where provision of the chassis number of the vehicle will enable the star rating to be calculated.
More details here: https://tfl.gov.uk/info-for/deliveries-in-london/delivering-safely/direct-vision-in-heavy-goods-vehicles