Flitslicht of zwaailicht : hoe opvallend zijn waarschuwingssignalen? [Flashing or rotating lights: how conspicuous are warning signals?]
article
This article gives an overview of the parameters influencing the conspicuity of warning lights. In general, higher light intensities are more conspicuous. A flashing light is better than a continuous light. Flashing frequencies of about 10 Hz are perceived as unpleasant, and below 1 Hz the light has no warning character. Frequencies between 2 and 4 Hz are recommended. When the flash duration is shorter than 1 s the maximum intensity should be increased for the same conspicuity level. Colour is an important for coding the vehicle type. During the daytime blue lamps are less conspicuous than yellow and red lamps. At night the opposite holds true, and blue light may even judged as too glaring. The number of warning lights and the position on the emergency vehicle influence the conspicuity. More lights give more conspicuity, if flashing synchronously.
TNO Identifier
8594
Source
Verkeersknooppunt, 24(5), pp. 2 - 4.
Pages
2 - 4
Files
To receive the publication files, please send an e-mail request to TNO Repository.