Better signs for better road safety

Adel Al-Yousifi

This study investigates the effectiveness of traffic signs, as described in the Vienna Convention, in sending information, warnings, and orders to drivers to create a safe driving environment. This study assumes traffic signs affects the driver's mind and consequently driving behaviour. Confusing traffic signs therefore increases traffic accidents and traffic disturbances. This paper hypothesises that: 1) Some symbols and signs are ambiguous and not easily understood; 2) Some symbols give a meaning different from design intentions; 3) Some symbols give more than one meaning; and 4) Some signs give drivers the impression they are allowed to take actions that are dangerous. The methodology used is based on field research, interviews, and surveys. Traffic signs and their usage were observed, documented, and photographed in 23 countries around the world. Drivers and other interested parties were interviewed. The survey included questions about sixteen traffic signs, which need review and reconsideration. The surveys were conducted at random to 6,000 drivers in England, France, Iran, Kuwait, Bahrain, and Ukraine. Then the survey forms were numbered and entered into the computer using SPSS statistical analysis. The results of this basic statistical analysis validate the assumptions, e.g., that perceptions and understandings of some traffic signs are very low (29.07% in the case of A,7a sign), and that the ambiguity of such signs can give drivers wrong and dangerous information. This confirms the need to review and change certain signs in the context of the technological, geographical, social, and psychological developments of mankind, and to standardise traffic signs in view of increasing globalisation.



Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.



Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018

VTI’s Senior Research Leader Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018 for his work on research into tyres and road surface.


Steps need to be taken to increase traffic safety of automated cars

Several steps are necessary to ensure that automated and connected cars will lead to increased traffic safety – everything from ensuring that technology takes vulnerable road users into account, to new forms of driver training. This has emerged in a position...


FALCON examines challenges in the transport sector

VTI is one of several important partners in the major FALCON project*, whose purpose is to create knowledge and insight regarding the transport sector. In an initial subproject, VTI has produced a manual on transport, logistics and multimodality.


VTI joined research cooperation in China

In December 2017 VTI became a member of China-Sweden Research Centre for Traffic Safety (CTS).


Swedish German research collaboration on Electric Road Systems

The project “Swedish-German research collaboration on Electric Road Systems” (CollERS) has now officially started. The goal of the project is to increase the common knowledge around Electric Road Systems by cooperation between Germany and Sweden and to...


Electric Road Systems Conference 2018

After a successful first conference in June 2017, the Swedish research and innovation platform for electric roads is arranging the second dedicated International Conference on Electric Road Systems (ERS) June 13th and 14th 2018.