Rear Light Redundancy and Optimized Hazard Warning Signal - New Safety Functions for Vehicles 970656
If a tail light bulb burns out, the failure will be detected by an electronic light check module. The missing tail light will be substituted by the stop light function. The luminous intensity of the stop light will be automatically reduced to the tail light level. If a car is equipped with rear fog lights, a faulty brake light can be substituted, similarly by a reduced rear fog light.
Today the hazard warning signal has the same frequency as the turn signal indicator. If one side of a car is blocked by for example another car then it is not possible to differentiate between the aforementioned signal types. Therefore the hazard warning information is lost. The suggested new hazard warning signal consists of a double-flash with a short break, the time period is nearly unchanged.
Citation: Huhn, W., Ripperger, J., and Befelein, C., "Rear Light Redundancy and Optimized Hazard Warning Signal - New Safety Functions for Vehicles," SAE Technical Paper 970656, 1997, https://doi.org/10.4271/970656. Download Citation
Author(s):
Wolfgang Huhn, Joachim Ripperger, Carsten Befelein
Affiliated:
BMW AG
Pages: 5
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
New Concepts in International Automotive Lighting Technology-SP-1249
Related Topics:
Exterior lighting
Hazards and emergency operations
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