Vägbanereflektorer: trafikantbeteende, upplevelse och bidrag

Download

The overall aim of this study was to increase the knowledge about road studs’ potential impact on road user behavior, how they are perceived and the possible contribution they make to other road equipment. The study consisted of three parts. Part one was a literature study, part two was a field study with speed measurements in a sharp rural road curve equipped with road studs either on the center or the right edge line, and part three was an interview study. The results from the literature review showed that there were relatively few studies on road studs and road user behavior. The general conclusion was that the use of road studs seems to increase speeds slightly, while the lateral position will be shifted slightly in the direction from the markings. The results from the speed measurements in a sharp curve equipped with active illuminated road studs showed no significant differences in speed in any of the conditions. The results from the interview study showed that the first contact with the studs was perceived that something had been done in order to attract attention on something, which created curiosity, but also uncertainty about what to expect and how to act ahead. An impression of a slight help to determine the road's stretching before entering the curve was expressed, but at the same time, some competition from delineator posts of the visual space was experienced which created a sense of visual overload. It was thought that non-familiar drivers, probably would reduce the speed slightly ahead of the curve when they noticed the road studs. Familiar drivers were regarded not to be affected in this sense. Regarding what unique contribution the use of road studs could give, it was expressed that they could help road users by warning that a sharp curve that required special adaptation approached. However, the overall perception was that road studs most likely would not contribute much in improving the visual guidance through curves. Instead, it was considered that road markings and delineator posts would usually be sufficient.

MEET US


7
Dec

Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.

LATEST NEWS


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...


2017-09-29

New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


2017-09-29

VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


2017-07-05

Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...