Utvärdering av ett fordonsbundet varningssystem: vibrationer i sätet vid risk för överträdande av kant- eller mittlinje

Download
Magnus Hjälmdahl

One alternative to rumble strips is to simulate them in the car by vibrations in the driver's seat. Citroen has a lane departure warning system in the models C4 and C5 which has been evaluated from user experience. A focus group was carried out with four users from Ostergötland. From the discussion a questionnaire with accompanying diary was constructed and sent out to Citroen owners in Sweden having a lane departure warning system. A large part of the users have not received any information about the system at the time of buying the car. The majority of the users are satisfied with the lane departure warning system but almost all declare not to use it at all in winter which indicates that it should be improved to be used all the year round.

The results point towards that the system has a good price level, but many still think that it should be a part of the standard equipment meaning that safety should not be optional. Noise and vibrations are considerably lower in C4 and C5 compared to milled rumble strips. Many drivers are disturbed by false alarms. Therefore more apparent warnings demand a reduction of false alarms. The most important result is that more information and guidelines should be given to the users. Function and shaping of the lane departure warning system should also be improved. Citroen has satisfied customers willing to pay for well functioning support systems.

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...