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Field-test to determine the optimal traffic sign illumination based on glare-free high beam

Kosmas, Kyriakos and Kobbert, Jonas and Khanh, Tran Quoc
Khanh, Tran Quoc (ed.) (2017):
Field-test to determine the optimal traffic sign illumination based on glare-free high beam.
In: Proceedings of the 12th International Symposium on Automotive Lighting (ISAL), ISBN 978-3-8316-4671-5, München, In: International Symposium on Automotive Lighting (ISAL), Darmstadt, 25.-27.09.2017, In: Darmstädter Lichttechnik, 17, [Conference or Workshop Item]

Abstract

At the Technische Universität Darmstadt a study is performed to find the optimal traffic sign illumination that does not result in glare (through an outshining of the traffic sign) and maximizes the identification distance. This is done by a dynamic field study, in which a vehicle with glare-free high beam passes with constant speed, traffic signs located to the left and right side but also in front of the driver, simulating a sign in a bend. After passing with low beam (lower limit) and high beam (upper limit), high beam is dimmed stepwise to simulate different levels of masking out traffic signs. To find the optimal masking level, identification tests are performed for each high beam intensity. By combining the identifi-cation distances with the identification luminance, the glare rating and brightness rating, the optimal traffic sign illumination can be found. Furthermore, illuminance is measured during each passing process, both at the traffic sign and at driver’s eye position. To receive a correlation between measured illuminance and distance, a GPS system is placed on both vehicle and traffic sign.

Item Type: Conference or Workshop Item
Erschienen: 2017
Editors: Khanh, Tran Quoc
Creators: Kosmas, Kyriakos and Kobbert, Jonas and Khanh, Tran Quoc
Title: Field-test to determine the optimal traffic sign illumination based on glare-free high beam
Language: English
Abstract:

At the Technische Universität Darmstadt a study is performed to find the optimal traffic sign illumination that does not result in glare (through an outshining of the traffic sign) and maximizes the identification distance. This is done by a dynamic field study, in which a vehicle with glare-free high beam passes with constant speed, traffic signs located to the left and right side but also in front of the driver, simulating a sign in a bend. After passing with low beam (lower limit) and high beam (upper limit), high beam is dimmed stepwise to simulate different levels of masking out traffic signs. To find the optimal masking level, identification tests are performed for each high beam intensity. By combining the identifi-cation distances with the identification luminance, the glare rating and brightness rating, the optimal traffic sign illumination can be found. Furthermore, illuminance is measured during each passing process, both at the traffic sign and at driver’s eye position. To receive a correlation between measured illuminance and distance, a GPS system is placed on both vehicle and traffic sign.

Title of Book: Proceedings of the 12th International Symposium on Automotive Lighting (ISAL), ISBN 978-3-8316-4671-5
Series Name: Darmstädter Lichttechnik
Volume: 17
Place of Publication: München
Uncontrolled Keywords: self-glare, traffic sign, glare-free high beam
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design
18 Department of Electrical Engineering and Information Technology > Institute for Electromechanical Design > Light Technology
Event Title: International Symposium on Automotive Lighting (ISAL)
Event Location: Darmstadt
Event Dates: 25.-27.09.2017
Date Deposited: 08 Feb 2018 13:35
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