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It is well known that different road features contribute to the likelihood and severity of crashes. Changing or upgrading these road features may reduce risk. This case study is one of a series carried out on roads in the UK to demonstrate a process of road assessment and crash reduction where Crash Risk Mapping can guide a selective Star Rating process.

The information detailed in this Case Study has been provided by RSI ‘Panos Mylonas’. The National Road 90 or North Road Axis of Crete (NRAC) is located on the island of Crete (South of Greece) and extends from one end of the island to the other (Kissamos to Sitia).

The information detailed in this case study has been provided by RSI ‘Panos Mylonas’. National Road 51 is also part of the European Network (E-85) and is the road connecting Egnatia Odos (E-90) with Bulgaria, at the north-eastern side of Greece.

The information detailed in this Case Study has been provided by RSI ‘Panos Mylonas’. Material in this case study is derived from the SENSoR study and as part of capitalisation of that project1 foreseen in the SLAIN proposal (section 2.2).

This case study, provided by RSI ‘Panos Mylonas’, shows how Crash Risk Mapping guides selective iRAP Star Rating on Greece’s 45 km NR‑27 between Itea and Bralos.

This case study concerns the Zagreb bypass, motorway A3 section from junction Jakuševec to junction Ivanja Reka (Figure 1) where a Star Rating for Design Plans has been conducted.

The roads and road sections selected for this Case study are a part of the Croatian TEN-T road network. These include three motorway sections (motorways A6, A8, and A9) and the state road D8 section.

This case study focuses on TEN-T road network sections in Croatia selected as a priority for analysis because they had the highest individual risk rates determined by Crash Risk Mapping protocol.

This case study has been supplied by FPZ. Based on the network-wide assessment using the Crash Risk Mapping methodology already performed, high risk road sections were identified. The subject of this study is the state road D8 section: Slano – Sustjepan which was selected based on relatively high risk rates determined by the Crash Risk Mapping protocol.

The information detailed in this case study has been provided by Anas. The case study shows a reduction in risk after implementation of maintenance and some additional measures added during that process.

The information detailed in this Case Study has been provided by ANAS. The case study shows how a traditional crash “before and after” study on part of a network may be informed and enriched by the use of complementary iRAP data.

The information detailed in this case study has been provided by ANAS. The case study shows how a traditional crash “before and after” study on part of a network may be informed and enriched by the use of complementary iRAP data.

This case study, provided by DGT, outlines the N‑IV road—originally a single carriageway from Madrid to Cádiz—now mostly upgraded to the A‑4 highway under Spanish national authority.

The information detailed in this Case Study has been provided by DGT. The road A-318 is located in Cordova province (South of Spain) and connects A-92 highway (near Seville/Cordoba provinces border) and N-432 road. The road authority in charge is “Junta de Andalucía”, which is part of the Regional Government of Andalusia (Spain).

The information detailed in this case study has been provided by GenCat. It describes the identification of a road section suitable for the installation of a 2+1 lane configuration with a central median and comparison of potential treatment scenarios.

The information detailed in this case study has been provided by GenCat. It describes the effect of installing a 2+1 lane configuration with a median barrier and how the iRAP Star Rating protocol can be a valuable tool for testing the potential effectiveness of any planned countermeasure before it is actually implemented.

The information detailed in this Case Study was provided by DGT. The A-375 road is located in the South of Spain and connects Utrera city with the A-384 highway (near Puerto Serrano town). The road authority is “Junta de Andalucía”, which is part of the Regional Government of Andalusia (Spain).

This case study, provided by DGT, examines a section of the A‑4 highway between Córdoba and Seville, selected for analysis due to crash risk and safety concerns identified through mapping and local data.

The information detailed in this Case Study has been provided by DGT. The road N-630 is an undivided carriageway road which connects Merida with Seville in the West of Spain. The responsible road authority is “Ministerio de Transportes, Movilidad y Agenda Urbana”, which is part of Spanish National Government.

This case study shows how Star Rating maps, Safer Roads Investment Plans (SRIPS) and tools within the iRAP software platform ViDA maps may be used to guide site selection for 2+1 roads with a median barrier.

This case study examines how design affects the Star Rating Score (SRS), which determines road safety levels (1–5 stars). It shows how SR4D can assess road safety before construction by evaluating design elements and user risk.

Sweden’s 2+1 wire rope median design has cut head-on crashes, reducing fatalities and serious injuries by 50% and injury crashes by 21%.

RADAR is a €2.15 million project to improve road infrastructure safety across 12 countries in the Danube region. The 3-year Risk Assessment on Danube Area Roads (RADAR) project is being run by the Slovenia-based European Institute of Road Assessment (EIRA).

In Britain, there were more than 153,158 reported road casualties in 2019. Societal costs equate to 1.7% of Gross Domestic Product. The Road Safety Foundation (RSF) systematically measures and maps 53,000km of motorways and A roads each year to performance track the safety of Britain’s roads.

The modelled expected results from SRF 1, 2 and 3 are impressive, with the £200 million investment (with additional life operating and maintenance costs of a further £25 million) preventing an estimated 2,600 fatal and serious injuries over the next 20 years, with a value of prevention of injuries of £1.2bn.

Urgent fixes to the Vodice bypass will prevent 14 deaths and serious injuries and lift star ratings to 3 stars or better.

The SLAIN project results comprise the means for enabling partners to accomplish a common view and approach in deploying road assessment tools and to build on the material to support the discussions of both Directive 2008/96/EC and CCAM Single Platform.

How Star Rating maps, Safer Roads Investment Plans (SRIPs) and tools withing the iRAP software platform ViDA maps may be used to guide site selection for 2+1 roads with a median barrier.

How improvements to roads and roadsides can reduce serious injury and in particular the use of the 2+1 with wire rope median as used in Sweden.

How improvements to roads and roadsides can reduce serious injury and in particular the use of the 2+1 with wire rope median as used in Sweden and an example on Road No. 21 near Vanneberga in the south of that country.