Visibility Sightline Assessments

We have a proven track record in securing planning permission at ‘difficult’ sites where visibility has been identified as a critical issue at the pre-planning stage.

Any new access which is proposed onto an existing public road must comply with the visibility sightline requirements of the NRA: DMRB or any other design standard approved by the Local Authority. In the interests of road safety there must be sufficient visibility available to drivers looking in both directions from the proposed access and also for drivers approaching the proposed access. This is to ensure that drivers have sufficient time to slow down or stop comfortably when approaching a potential hazard.

The level of visibility to be provided at any point is a derivative of the design speed of the road at that point i.e. in accordance with NRA: DMRB requirements 60kph design speed ~ 90m visibility; 70kph design speed ~ 120m visibility; 85kph design speed ~ 160m visibility; 100kph design speed ~ 215m visibility.