Olycksrisk vid lokala ojämnheter och andra ytdefekter

Download

This study has examined, in particular, the effect road surface “local unevenness” has on traffic accident risk. Effects from other road surface defects were also considered but to a lesser extent. Test results are non-significant when considering if local unevenness has any main effect. Local unevenness has also not been chosen as part of any significant term of higher order. The analysis provides no support that local unevenness influences the risk of accidents. With regards to other variables related to the road or road surface, there is a negative correlation between rut depth and accident risk, and a positive correlation between longitudinal gradient and accident risk. Accident risk varies in correlation with IRI (International roughness index) and the permitted speed limit in a way that implies that risk decreases with higher speed and low IRI, and higher IRI and low speed. The risk increases when both IRI and speed increase. Precipitation information is an example of a variable that has been included in the analysis but is not related to the road or road surface. Data indicates that accident risk is lower in places where heavy rainfall often occurs.

LATEST NEWS


2018-06-13

International Conference on Electric Road Systems starts today

Electric Road Systems (ERS) is a relatively new concept with many initiatives on the way. To learn from each other and stimulate new collaborations the Swedish Research and Innovation Platform for Electric Roads arranged the first international conference...


2018-05-18

Same survey of road users’ attitudes in 50 countries

At the Road Safety on Five Continents Conference, RS5C, one entire session presented a large survey of road users' attitudes in 38 countries. Results show large differences between countries in many areas, both regarding behavior and attitudes. A new survey...


2018-05-17

Good results with alcohol interlock program according to Swedish study

An alcohol interlock program makes it possible for drink driving offenders to continue their everyday lives. In a Swedish study most of the participants were satisfied with the program and experienced improved health. They also reported drinking alcohol more...


2018-05-16

Traffic safety in the spotlight

Today the Conference Road Safety on Five Continents (RS5C) opened in Jeju Island, South Korea. More than 220 participators have come from all over the world to present findings and learn about traffic safety. Dr. Young Tae Kim, Secretary-General of the...


2018-04-17

VTI will develop simulators for ambulance staff

VTI has initiated a pilot study for paramedics with the Centre for Teaching & Research in Disaster Medicine and Traumatology and Linköping University. The aim is to give ambulance staff the opportunity to practice critical medical tasks in a moving vehicle in...


2018-04-12

Unique electrified road opens in Sweden

The world’s first electrified road recharging the batteries of cars and trucks while driving opened in Sweden. The Swedish Minister for Infrastructure, Tomas Eneroth, was at the formal inauguration of the electrified road on April 11, 2018. VTI is one of 22...