Direct Vision Standard (DVS) Guide


The Direct Vision Standard forms a key part of the Mayor’s Vision Zero approach to eliminating all deaths and serious injuries from London’s roads by 2041. Restrictions in an HGV driver’s field of vision, or ‘blind spots’ have been identified as a significant contributory factor in collisions. The HGV Safety Permit is a holistic approach which aims to improve the overall safety of HGVs through blind spot elimination and minimisation, warning of intended manoeuvre, minimising the physical impact of a hazard and recommending driver safety training.

How many vehicles will be affected?

According to the FTA, over 60% of all HGV’s over 12 tonnes in weight will be banned from entering most of London without a permit.

What is TfL proposing?

The Direct Vision Standard (DVS) for heavy goods vehicles (HGVs) assesses and rates how much a driver can see directly from their HGV cab in relation to other road users. The DVS forms part of a proposed Safety Permit for all HGVs over 12 tonnes entering

London. DVS uses a star system to rate HGVs over 12 tonnes from 0 (lowest) to 5 (highest), based on how much a driver can see directly through their cab windows.

What will I need if my vehicle is rated zero, can ACSS help?

ACSS can provide you with a solution that contains the required equipment that will enable blind spot elimination.

  • Audible or visual warning around the vehicle

  • Proximity sensors

  • A camera monitor system fitted to the nearside

  • Physical protection to deflect vulnerable road users away from the vehicle

  • Driver safety training

What will happen in the next phase of the scheme?

Phase two of the scheme in 2024 would require HGVs rated two-star and below, to meet the requirements of a ‘progressive safe system’. These will be more stringent than those from phase one to account for future developments in technology and safety measures and to give the industry additional time to prepare for these changes. The progressive system will be subject to further consultation at an appropriate point before 2024

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