Evaluation of 2+1-roads with cable barriers: final report

Download
Arne Carlsson

The Swedish Road Administration started in 1998 a development program denoted alternative 13 metre roads, since 2002 denoted "collision-free roads". The program objectives were to increase the traffic safety on existing 13 m-roads and semimotorways (two-lane expressways) in a cost-effective manner with significantly lower investment costs and smaller intrusion compared to traditional measures. These actual roads with a total length of about 3 700 km during the 1990s, of which 350 km were semimotorways, comprised about 25 % of the mileage on the main road network but only 14 % of the length. During the 1990s there were almost 100 yearly fatalities and 400 severe injuries on this network, which corresponded to almost 25 % and 20 % respectively of the total number on the national road network. To ensure that the objectives should be achieved a comprehensive evaluation and follow-up was started of all the measures undertaken in the scope of the development program. This evaluation should ensure that important impact factors for costs and effects were considered. This publication is the final report and a summarized documentation of the results and experiences from the extension of collision-free roads, from the beginning of 1998 to 2006-2007, when the evaluation gradually has been ceased.

LATEST NEWS


2017-11-30

Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...


2017-11-30

New research programme for more efficient travel

The Swedish National Road and Transport Research Institute (VTI) is playing an important role in a major new research programme to find radical solutions leading to fewer trips and more efficient travel, along with tools to enable better use of roads and...


2017-11-30

Simulator used to practice emergency responses safely

Emergency responses of the police, ambulance, and rescue services are associated with a high risk of accidents, but practicing them in real traffic is neither safe nor permissible. A simulator-based method developed by the Swedish National Road and Transport...


2017-10-26

Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.


2017-10-16

ERPUG Forum

The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


2017-09-29

Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...