The Direct Vision Standard (DVS) and safety permit for heavy goods vehicles (HGVs) requires all HGVs over 12t to be granted a permit to enter or operate in Greater London. The scheme was created by Transport for London (TFL) to improve the safety of all road users, including pedestrians, cyclists and motorcyclists. It will operate 24 hours a day, seven days a week and will be enforced on all roads within the Greater London Boundary. The change came into effect on 26 October 2020 and will be enforced from 01 March 2021.
The DVS uses a star system to rate the vision from HGVs from zero star (lowest) to 5 star (highest) based only on how much a driver can see directly through their cab windows.