Collision Analysis

Collision Analysis & Investigation Services

Collision Analysis & STATS19

Data Investigation

Our collision analysis supports GG119 Road Safety Audits, highway improvement schemes, planning applications and post-collision investigations throughout the UK.

Road collisions are rarely the result of a single factor — they emerge from a complex interaction of human behaviour, road layout, traffic conditions and environmental influences. At David A Graham Associates, we specialise in uncovering these underlying causes through detailed, data driven collision investigation and road safety engineering.

Our work supports Local Authorities, consultants and developers who need reliable, defensible analysis to inform safety schemes, planning decisions and long term casualty reduction strategies.

What

We Do

Our collision investigation service combines specialist engineering knowledge with robust analytical methods. Every study is built on high quality evidence, including:

  • Accsmap / CrashMap analysis — identifying collision clusters, trends and emerging risk locations
  • Police STATS19 collision data and reports — analysing contributory factors, collision types, vehicle manoeuvres, road conditions and injury outcomes to identify underlying safety issues.
  • Site inspections — assessing geometry, visibility, signing, surfacing and user behaviour
  • Traffic and speed data — understanding flow patterns and conflict potential
  • Engineering review — identifying practical, proportionate and cost effective interventions
  • Identification of collision cluster sites and emerging collision patterns

This combined approach ensures that every conclusion we draw is grounded in verifiable evidence and professional engineering judgement.

Why Choose

David A Graham Associates

Our background in public sector road safety engineering means we understand the pressures Local Authorities face — limited time, limited resources, and increasing expectations for measurable casualty reduction.

David A Graham Associates offers:

  • Responsive turnaround times without compromising analytical depth
  • Clear, structured reporting suitable for committees, planning applications, stakeholders and public consultation
  • Actionable recommendations based on proven engineering principles
  • Independent expertise trusted across the UK and internationally

Our engineers have decades of experience delivering site specific collision studies, route based assessments and area wide safety reviews in both urban and rural environments.

Typical

Outputs

A David A Graham Associates collision investigation report may include:

  • Collision history summaries and trend analysis
  • GIS based mapping of collision locations
  • Identification of dominant collision types and contributory factors
  • Engineering problem identification
  • Short list of feasible interventions
  • Prioritisation based on risk, cost and deliverability
  • Prioritised engineering recommendations to improve road safety and reduce future collisions

Each report is designed to support decision making, funding bids and scheme development.

Our

Experience

For more than 20 years, David A Graham Associates has delivered collision and traffic studies across the UK and internationally. Here’s just a selection of our commissions over the years:

UK

  • Road Safety Assessment and Collision Analysis Llanharry to Y Pant School route, Wales
  • Road Safety Assessment and Collision Analysis Drayton Road, Stokeham, Nottinghamshire DN22 0JZ
  • Road Safety Assessment and Collision Analysis A19 Junction Askern Doncaster
  • Road Safety Assessment and Collision Analysis, Proposed New Access for Playing Field off Hatfield Avenue, Hatfield, Hertfordshire
  • Road Safety Assessment and Collision Analysis of the highway infrastructure of the Talisman Industrial Estate Bicester, Oxfordshire
  • Road Safety Assessment and Collision Analysis Highway Safety Improvements Curry Rival Somerset

International

  • Road Safety Plan Synopsis with Collision Analysis of the entire road network of the Island of Mauritius
  • Road Safety Assessment and Collision Analysis of the road network in the City of Kaunas, Lithuania
  • Road Safety Assessment and Collision Analysis of high-speed roads for the Department of Rural Roads Bangkok, Thailand

Our work has helped clients implement schemes that reduce collisions, improve network performance and support long term safety strategies.

Need Expert

Collision Analysis?

Whether you require collision investigation to support a planning application, Road Safety Audit, highway improvement scheme or expert witness instruction, David A Graham Associates provides independent, evidence-based analysis trusted by Local Authorities, consultants and developers throughout the UK and internationally.