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Research and technical papers

G20 Infrastructure Investment Can Save 40,000,000 People

This fact sheet includes road safety statistics for G20 countries and outlines what G20 countries could achieve through target investment in safer roads.

The Global Cost of Road Crashes

This fact sheet outlines the global cost of road crashes in 2010 based on the Global Status Report on Road Safety (WHO, 2013) and the True Cost of Road Crashes (iRAP, 2008).

The Business Case for Investment in Road Safety

This interim fact sheet supports the SLoCaT Sustainable Transport Goal and the Road Safety Targets & Results Framework.

Safe System infrastructure: implementation issues in low and middle income countries

This report provides a summary of a workshop held in Bangkok, Thailand as part of the 2012 GRSP / iRAP Asia Pacific Workshop, involving delegates from governments and road authorities around the Asia-Pacific region. The aims of the workshop were to raise awareness regarding Safe System infrastructure treatments and to explore barriers to their implementation in low and middle income countries. 

iRAP Safer Road Infrastructure Bonds – the missing metric for Social Impact Bonds

This paper is designed to generate discussion on the potential for various investment options, such as Social Impact Bonds, to provide a mechanism to increase investment in safe road infrastructure. 

Relationship between Star Ratings and Crash Costs: the Bruce Highway, Australia

The results of this study provide a means of quantifying the social and economic benefits that would be realised by improving Star Ratings of the Bruce Highway. 

Notes from the iRAP Innovation Workshop (2012)

This first Innovation Workshop brought together the experts in road safety engineering from iRAP Centres of Excellence and the active iRAP programmes around the world to share knowledge and innovation from their local programmes.  The workshop enabled a focus on developments to the Road Assessment Programme model and its presentation platform ViDA.

Baseline data collection in India: Karnataka Phase

iRAP commissioned JP Research to prepare this report, which includes baseline crash, traffic and speed data for roads in Karnataka, India.

Baseline Data Collection in India: Gujarat Phase

iRAP commissioned JP Research to prepare this report, which includes baseline crash, traffic and speed data for roads in Gujarat, India.

Barriers to Change: Designing Safe Roads for Motorcyclists

The report, by a Motorcycle Safety Review Panel, finds that crash can barriers be designed so that riders have some protection against the aggressive features that cause devastating injuries.

Crash Rate-Star Rating Comparison Paper

This is a review of 11 studies that make comparisons between average crash rates, costs or severities and the Road Assessment Programme's Star Rating or Road Protection Score (RPS).

Development of Risk Models for the Road Assessment Programme

This paper, written by Dr David Lynham (TRL), is a retrospective on the development of the RAP models and, in particular, the original 'Version 1.0' model.

The iRAP Model Review Workshop

This high-level workshop, held in 2010, was organised to assess and peer review the iRAP methodology.

Review of iRAP Risk Parameters

As part of its periodic assessment of available information and research evidence, iRAP commissioned the ARRB Group to undertake a review of the iRAP risk factors.

Road Deaths in Developing Countries: the Challenge of Dysfunctional Roads

This paper by Dr John Mumford examines the statistical evidence on how closely rising road deaths and rising motorisation are linked.

Saving Lives Through Investment in Safer Roads - the iRAP Partnership

This paper provides an update on progress with RAP programs worldwide, including a number of case studies from countries where studies have been completed.

The True Cost of Road Crashes: Valuing Life and the Cost of a Serious Injury

This paper from Dahdah and McMahon provides a practical, useable estimates of the cost of a fatality and a serious injury for any country at any point in its state of economic development.

El Verdadero Costo de las Colisiones Viales: El Valor de Una Vida y El Costo de Una Lesión Grave

Este documento de Dahdah y McMahon provee una respuesta práctica que se puede aplicar a cualquier país, sea cual fuere su nivel de desarrollo económico.

Vehicle Speeds and the iRAP Protocols

Vehicle speed influences both the likelihood of a crash occurring and its severity.  Speed is therefore a critical aspect of managing a safe road system, and influences iRAP Star Ratings and Safer Roads Investment Plans. This report sets out iRAP policy on use of speed in its assessments.

Before and After Studies Using Crash Data and iRAP Protocols

This paper discusses various options to evaluate the safety impact of infrastructure improvements, including crash data and Star Ratings.

Safe Roads for Development

This policy framework is designed to assist policy makers in low- and middle-income countries harness the enormous benefits of safe road infrastructure. It signposts the significant social and economic benefits of ensuring new roads are safe and existing roads are retrofitted with safety treatments.  

Star Rating Road Improvements

This report describes a methodology that uses iRAP Road Protection Scores (RPS) and Star Ratings to estimate the change in road safety risk as a result of infrastructure improvements undertaken at several hirisk sites in Malaysia under the black spot program. Changes in risk for car occupants, motorcyclists, pedestrians and bicyclists at 10 sites were assessed.

Star Rating from Road Design Plans: M2-R7 Saratenii-Soroca-Drochia Junction and M21 Dubasari-Goieni

The report summarises the results of an independent road safety assessment into the preliminary designs of the eastern section of the M21 Road in Moldova from the Nistru River to Goieni (about 23 km) and the final design of the Road Rehabilitation Project (RRP) M2R7 Sarateni-Soroca-Drochia Junction (about 93 km).

Star Rating Road Designs: Performance Indicators for Roads in India

This report describes how iRAP Star Ratings, which provide a simple and objective measure of the level of safety attained by a given road network, were used to help shape the safe design of 550km of concession roads in the Indian State of Karnataka.

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