Safer Road Investment Plans

Where Star Ratings provide a measure of risk on a road for the individual roads user, Safer Road Investment Plans (SRIP) identify ways in which fatal and serious injuries  can be improved in a cost effective way.

Safer Road Investment Plans consider more than 90 proven road improvement options to generate affordable and economically sound road improvements that will save lives. These road improvement options range from low-cost road markings and pedestrian refuges to higher-cost intersection upgrades and full highway duplication.

The SRIP is produced in 3 key stages:

Drawing on data underpinning the Star Ratings and traffic volume data, estimates of fatal and injuries throughout the network are generated;
For each section of road, options for improvement are tested for their suitability and potential to reduce deaths and injuries. For example, a section of road that has a high level of risk for pedestrians might be a candidate for a pedestrian refuge, pedestrian crossing or signalised pedestrian crossing;
Each improvement is assessed against the project’s economic effectiveness criteria by making use of the road safety countermeasure cost data collected earlier in the project. A benefit-cost ratio of one is often set as a minimum requirement as a starting point for analysis. This ensures that the proposed programme is affordable and demonstrates responsible use of public money.

The Safer Roads Investment Plan produces information on:

  • Where the most affordable and cost-effective road improvements can be made on the network;
  • The number of deaths and serious injuries that would be avoided if the plan were to be implemented;
  • The economic benefit of the plan, in terms of the benefit-cost ratio showing returns on investment;
  • The cost of the plan, incoperating capital and maintenance costs;
  • The estimated cost per death and serious injury avoided.
The results of the plan can be displayed as the entire road network or filtered for individual road sections.

Safer Roads Investment Plans in EuroRAP

The following are examples of national programmes and projects that have completed a Safer Roads Investment Plan in the course of their work:
In an effort to prevent road traffic deaths and injuries, the Bloomberg Philanthropies announced in November 2009 a $125 million Global Road Safety Program in 10 countries (“RS10”) over 2010-2014 and formed a consortium of 6 partners to implement it. Under RS10 the Global Road Safety Facility agreed to assess the infrastructure safety of key corridors in Russia through the implementation of iRAP safety rating and countermeasure evaluation tools. Mari-El Republic was chosen for the first assessment.
More than 2,500kms of key Moldovan roads have been assessed, problems have been diagnosed and affordable remedies identified. The findings are influencing the design of road projects shortly to be built and in preparation. The report identifies 20 types of improvement tailored site by site as top value-for-money priorities. For every Lei invested, 5 Lei would be returned to the economy.
This report presents Star Ratings and a countermeasure programme for almost 3,000kms of strategically important roads throughout Serbia. It identifies opportunities to prevent more than 5,000 deaths and serious injuries over 20 years.