The use of road surface characteristics to predict consequences for winter road maintenance

This paper consists of three parts that investigate how to use road surface characteristics in winter road management. The first part is a review of an investigation about summer and winter road unevenness. The two other parts are technical discussions how to use some specific road surface characteristics from experiences derived from summer road surface conditions.

In Sweden the condition of the paved roads are measured regularly. The measurements are carried out in the summer. An investigation has been done showing that the condition varies between different seasons. This leads to the question: Do we measure the road condition at the right time? Can we predict the change in road condition from one season to another?

This investigation was done using longitudinal road profiles and analysis of IRI (International Roughness Index). Unevenness within wavelengths of 3 to 10 meter was found to be most affected by seasonal changes. To demonstrate the use of road surface characteristics for safety related purposes a 3D model was created. The model was then used to detect ponds that were large enough to be risk areas for aquaplaning.

Another investigation was done to find out the relation between rut depth and snow removal. Another use of road surface characteristics could be to locate areas that are prone to become slippery. To do this the actual summer road smoothness expressed as macro texture is suggested to be used as indicator. The rougher and more stone rich the pavement is the more the risk of binding snow and creating icy condition increases.

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...