Reports and Statistics
- Definition of a safe barrier for motorcyclists - February 2015
The Swedish associaiton of barriers manufacturers, in cooperation with VTI and the Swedish Motorcyclists association have released a report about motorcyclist friendy barriers. Through a literature review and by analysing accident stastics, the report seeks to classify existing barriers according to their motorcycle friendliness. According to the report, the safest systems that exist curretly are steel guardrails that are equipped with motorcyclist protection systems, while the least safe are cable barriers. Concrete barriers feature in the middle of the ranking.
The report is available here
- Evaluation of safety efficiency and contribution of the black spots treatment programme - 2013
In the years 2007-2009, in the framework of the black-spots' treatment project, the National Transport Infrastructure Company implemented many improvements in the infrastructure of rural roads. The purpose of infrastructure improvements is in enhancing safety level of the treatment sites, i.e. in reduction of accident frequency and/or severity at those sites. To assess the efficieny of the programme, a ex-post evaluation was carried out and which was published in January 2013.
According to the report, the installation of barriers on the rural and urban roads were found to be one of the most effective treatments. More specificallty, the study found that the installation of a median barrier on single carriage way resulted in a 23% estimated reduction of accident and 50% estimated reduction in injuries. Similarly, the installation of a median barrier in an urban road (upgraded to a dual carriageway) resulted in an estimated reduction of accident of 53%.
The full report is available here. (reference available at p.iii of the English summary)
-Motorbiking on Safe Roads! Practical Guidelines - 2011
The German Automobile Club (ADAC) in cooperation with German Motorcyclists Association (VDR) has published a report on road infrastructure can be made safer for Powered-Two-Wheelers. One of the measures identified in the report is the retro-active fitting of existung guardrails with motorcycle protection systems, which can significantly increase the safety of riders at practically no cost for road authorities, i.e. € 30 per metre.
The report is available here (reference available at p.13)
- Safer Road for Development: A Policy Framework for Safe Infrastructure on Major Road Transport Road Networks - 2010
The United Nations Road Safety Collaboration 'Working Group 4 - Infrastructure' has produced a report outlining a series of solutions that can be employed by policymakers to reduce road fatalities. The use of road barriers is identified as one of the most cost-effective 'vaccines' for common crash types and, according the report, can reduce by up to 50% by adding a median barrier on main road and up to 40% by road side barriers on rural roads.
In addition to general data, the report provides figures from the latest road safety action programme implemented by the government in Nairobi, Kenya. As part of its road safety action programme, the authorities have decided to perform a major upgrade of the road infrastructure on the main arterries connecting the capital to the rest of the country. Amongst the various measures measures identified is the installation of 26 km of median and road-side barriers to protect vehicles against head-on and run-off crashses. Expected to cost $ 2m in total, the authorities believe the measure will prevent 1,400 fatal crashes or serious injuries that will a value of safety benefit of $ 34 m over 20 years.
The full report is available here. (reference available at p.10, 14-15)
- Road Safety in France: results 2009 (Sécurité routière en France: Bilan 2009)
According to the report published by the Observatiore National Interministrièl de la Sécurité routière, the existence of potective barriers on roads can reduce fatalities by a factor of four when compared to collision against other road obstacles.
More specifically, in 2009 in France, a total of 513 people were killed in 1830 run-off accidents against trees, i.e. 28 fatalities for every 100 crashes. This number was reduced significantly when the same accident occurred against protective barriers. In a total of 2811 run-off accidents agaist protective barriers, 185 people were killed in France 2009, in other words, 6,6 fatalities for every 100 crashes.
The full report is available here. (reference available at p.133)
- Star Rating Roads For Safety: The EuroRAP Methodology
In its 2009 Consultation Paper on its Methodolody, the European Road Assessment Programme pointed out that the large majority of accidents happen either by run-offs, head on collissions or intersection crashes.
When examining possible remedies, road barriers are listed as one of the most efficient solutions for either mitigating the the risk of these accidents. According its analysis, the presence of a road barrier on road side can reduce the risk entailed by a factor of 3, when compared to a situation where no barrier exists on the roadside of a 'deep drainage ditch'.
The full report is available here. (reference available at p.15)
- Road Safety Obervatory: Road safety statistics 2008 (Observatoire pour la sécurité routière: statistiques 2008)
Statistics available for the year 2008 show that road barriers can significantly reduce the the consequences of collissions.
According to the report, a total of 263 fatal run-off accidents involving one vehicle occurred in Belgium in 2008. Of these, 41% (28% and 13% respectively) occurred against trees and walls, in other words, unprotected road sides. On the contrary, the number for fatal run-offs against a road restraint system were only 6%.
Moreover, the report found that almost 1 in 2 accidents on motorways happen when a single driver loses control of his vehicle. Given the generally good levels of safety on motorways, approximately 50% of collission in 2008 occurred against a road restraint system, thus significantly reducing the impact of the crash. At the same time, the report concluded that when such accidents against objects other than a road restraint system, e.g. lamp posts, trees etc, the gravity of the accident increased by up to a factor of 5.
The full report can be found here. (references available at pp. 60-61, 109, 191)
- World report on road traffic injury prevention (2004) - WHO recommends use of barriers to prevent accidents
In 2004, the World Health Organisation (WHO), in collaboration with the World Bank, published a report on road traffic injury prevention that establishes a 'compliance checklist' for road safety professional and policymakers. Amongst its key recommendation for a safe road infrastructure are the mandatory presence of median barriers on high speed roads and on hazardous stretches on rural roads.
The full report can be found here. (reference available at p. 23)