HomeServicesVisibility Sightline Assessments

Visibility Sightline Assessments

Road Safety

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.


Traffic Engineering & Transportation Planning: Traffic Impact Assessments | Feasibility Studies, Traffic Management Plans | Parking / Signage Strategies, Urban Renewal Schemes, Mobility Management Plans | Integrated Land Use Planning | Urban Network Modelling | Construction Management Plans | Collision Reduction Studies | Parking Assessments | Road Infrastructure Design: Conceptual, Preliminary and Detail Design | Traffic Calming Schemes | Junction Design (Priority, Signals, Roundabout) | Car Park Design | Road Safety: Traffic Calming | Speed Surveys | Accident Investigation & Prevention | Visibility Sightline Assessments | Road Safety Audits | Road Safety Engineering | Expert Evidence: Arbitrations | Expert Testimony | Road Traffic Accidents | An Bord Pleanála

© 2019 Trafficwise

developed with love by