JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
Original Papers
Fundamental Study on Driver Assistance Projections Using Adaptive Driving Beam
Yoko KatoYoshiro AokiMichiaki SekineMasaru SasakiYusuke NakadaNorihisa Sutou
Author information
JOURNAL FREE ACCESS

2022 Volume 106 Issue 1 Pages 43-49

Details
Abstract

Driver assistance projection technology, in which specific symbols are projected onto the road ahead of a vehicle using an adaptive driving beam (ADB), has been developed to assist drivers in driving safety; However, depending on how the projection used, it may distract the driver in the host vehicle as well as others on the road such as other drivers, pedestrians and cyclists. Thus, we conducted an experiment to validate the safety and readability of the projections. The effect of symbol projection on safe driving was investigated by measuring the drivers' response time in response to the brake lights of the vehicle in front. We also evaluated the readability of the symbols for the host vehicle drivers and other road users. Under the conditions of this experiment, when a symbol was projected onto the road, their response time was 0.1 to 0.2 s slower than when it was not projected. We also verified that the response time was longer when the symbol was difficult to read such as lamp low luminous intensity and far projected and that symbols projected with high luminous intensity near the vehicle were more noticeable for both host vehicle drivers and pedestrians. The results show that the luminous intensity, projected position, and size of the symbols need to be adjusted accordingly such that they can be easily read by the driver of the host vehicle without interfering with other road users.

Related papers from these authors
© 2021 The Illuminating Engineering Institute of Japan
Previous article Next article
feedback
Top