Samband mellan hastighet och belysning

Samband mellan hastighet och belysning


The relationship between spontaneous choice of speed and lighting level on streets with stationary light has been studied. On ten streets in Linköping, the speed of cars which were not disturbed by other traffic, was measured. These measurements were carried out both during daylight and darkness conditions, where the daylight condition measurements were used as reference. The dependent variable was the difference between speed in daylight and darkness. The hypothesis was that this difference would be high (including sign) on streets with high illuminance level and low on streets with lower lighting level. One important question was if low lighting levels would result in lower speeds that would compensate for the worse visibility of objects in or close to the street. If so, there would be a positive effect on energy and environment without making impairing traffic safety.



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...