Cause Analysis of Traffic Crashes Black Spots on Highway Long Steep Downgrades In China

Cause Analysis of Traffic Crashes Black Spots on Highway Long Steep Downgrades In China

Chengwu Jiao
Yubo Hao

Traffic crashes occurring on long steep downgrades of highway is very frequent and severe in China. Crashes aggregate on some special places where black spots are formed in this kind of highway sections. Causes of traffic crashes black spots on long steep downgrade need to be analyzed in order to improve the traffic safety performance in those places. Based on the investigation of traffic crashes data of 5 years period occurring on a typical expressway in South China with long steep downgrades, the expressway infrastructure traffic safety performance was analyzed before and after the traffic safety countermeasures applied by crash aggregation analysis method. And based on a brake temperature transformation model of trucks, causes of traffic crashes black spots on the long steep downgrade of that expressway were analyzed. Overload was given as a main cause of those traffic crashes black spots. The findings were helpful to understanding the cause of the crashes deeply and defined the most useful traffic safety countermeasures on that kind of black spots.



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...


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...


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...


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...


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...


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...