Studies have shown that driving with light during daytime is expected to lead to a benefit in traffic safety. Different configurations of lamps for the frontal signal pattern were mounted on a motorcycle for a comparative assessment. The investigated options of signal patterns contain alternative solutions to the passing beam which are intended to make motorcycles more conspicuous with a special or adjusted signal pattern. The results of the research projects 'Signal Pattern of Powered Two Wheelers during Daytime at Introduction of a Mandatory Use of Daytime Running Light in Germany' and 'Daytime Running Light (DRL) on Powered Two Wheelers - Continuative Research' can be summarised as follows: - One DRL according to ECE-R87 is better recognisable than the normal pas-sing beam. - Two DRLs are better recognisable than a single DRL. - DRLs with a luminous intensity at the upper limit of the range allowed in the ECE-R87 (400 cd - 1200 cd) are better recognisable at greater distan-ces than DRLs with a low luminous intensity, whereas the differences in the conspicuity caused by different colours respectively colour regions fade with greater distances. - On a greater distance (100 m) DRLs with a filament lamp as light source are equally recognisable to DRLs with LEDs as light source. The results of the research projects did show that under daytime conditions an improved perception of motorcycles equipped with daytime running lamps can be observed so that there is an improvement for road safety to be expected in the case of replacing the passing beam function by dedicated daytime running lamps. As a consequence of the results of the research on conspicuity of motorcycles the mounting of one or two DRLs according to ECE-R87 on motorcycles should be permitted to have the possibility to drive with activated DRLs instead of passing beam during daytime. This leads to proposals for amendments to Regulations No. 147 Improvement of Daytime Conspicuity of Motorcycles, 53 and No. 87. By that means an enhancement of daytime conspicuity of powered two wheelers is possible. In addition the energy consumption of the lighting devices can be reduced.
Improvement of daytime conspicuity of motorcycles
Verbesserung der Sichtbarkeit von Motorrädern bei Tag
2009
7 Seiten, 3 Bilder
Aufsatz (Konferenz)
Englisch
The evaluation of aids to the daytime conspicuity of motorcycles
TIBKAT | 1985
|Daytime Motorcycle Conspicuity
NTIS | 1980
|Daytime motorcycle conspicuity
TIBKAT | 1980
|JONG lighting system for enhanced conspicuity of motorcycles
British Library Conference Proceedings | 2007
|