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Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts

The effects of a traffic control devices on drivers at different speed percentiles, particularly on the faster drivers, are of specific interest due to their higher likelihood of crash involvement. A study was designed to evaluate how the dynamic speed feedback signs (DSFS) affect drivers while tran...

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Main Authors: Mahmud, Md Shakir, Gates, Timothy J., Megat Johari, Megat Usamah, Jashami, Hisham, Bamney, Anshu, Savolainen, Peter T.
Format: Article
Language:English
Published: Elsevier 2023
Online Access:http://psasir.upm.edu.my/id/eprint/107385/1/107385.pdf
http://psasir.upm.edu.my/id/eprint/107385/
https://www.sciencedirect.com/science/article/pii/S1369847823001857
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spelling my.upm.eprints.1073852024-11-04T03:37:46Z http://psasir.upm.edu.my/id/eprint/107385/ Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts Mahmud, Md Shakir Gates, Timothy J. Megat Johari, Megat Usamah Jashami, Hisham Bamney, Anshu Savolainen, Peter T. The effects of a traffic control devices on drivers at different speed percentiles, particularly on the faster drivers, are of specific interest due to their higher likelihood of crash involvement. A study was designed to evaluate how the dynamic speed feedback signs (DSFS) affect drivers while transitioning from a high-speed to a low-speed environment. A total of 5 sites were selected, which included a freeway exit ramp, two speed transition zones, and two high-speed rural highway curves. Vehicle speed profiles approaching and entering these critical locations were collected before and after installing the DSFS. Based on the tracked speed of the free-flowing vehicles before the influence area, drivers were categorized as slower drivers, average drivers, and faster drivers using the 15th and 85th percentile speed at each site. Overall, installing the DSFS resulted in a significant reduction in speed across all locations for all sites. Drivers were found to reduce their speed while approaching the curve, traversing through the speed transition zones, and entering the curves or reduced speed limit areas. Results showed that faster drivers tend to reduce speed more than the average or slower drivers at every location. The faster drivers also reacted to the sign earlier compared to the slower or average drivers. The overall results are encouraging as they indicate that DSFS impact faster drivers more, which can ultimately reduce speeding-related crashes when transitioning from a high-speed environment. Based on the findings, the continued use of DSFS as a speed reduction strategy is recommended. Elsevier 2023-10 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/107385/1/107385.pdf Mahmud, Md Shakir and Gates, Timothy J. and Megat Johari, Megat Usamah and Jashami, Hisham and Bamney, Anshu and Savolainen, Peter T. (2023) Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts. Transportation Research Part F: Traffic Psychology and Behaviour, 98. 157 - 169. ISSN 1369-8478 https://www.sciencedirect.com/science/article/pii/S1369847823001857 10.2139/ssrn.4416113
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The effects of a traffic control devices on drivers at different speed percentiles, particularly on the faster drivers, are of specific interest due to their higher likelihood of crash involvement. A study was designed to evaluate how the dynamic speed feedback signs (DSFS) affect drivers while transitioning from a high-speed to a low-speed environment. A total of 5 sites were selected, which included a freeway exit ramp, two speed transition zones, and two high-speed rural highway curves. Vehicle speed profiles approaching and entering these critical locations were collected before and after installing the DSFS. Based on the tracked speed of the free-flowing vehicles before the influence area, drivers were categorized as slower drivers, average drivers, and faster drivers using the 15th and 85th percentile speed at each site. Overall, installing the DSFS resulted in a significant reduction in speed across all locations for all sites. Drivers were found to reduce their speed while approaching the curve, traversing through the speed transition zones, and entering the curves or reduced speed limit areas. Results showed that faster drivers tend to reduce speed more than the average or slower drivers at every location. The faster drivers also reacted to the sign earlier compared to the slower or average drivers. The overall results are encouraging as they indicate that DSFS impact faster drivers more, which can ultimately reduce speeding-related crashes when transitioning from a high-speed environment. Based on the findings, the continued use of DSFS as a speed reduction strategy is recommended.
format Article
author Mahmud, Md Shakir
Gates, Timothy J.
Megat Johari, Megat Usamah
Jashami, Hisham
Bamney, Anshu
Savolainen, Peter T.
spellingShingle Mahmud, Md Shakir
Gates, Timothy J.
Megat Johari, Megat Usamah
Jashami, Hisham
Bamney, Anshu
Savolainen, Peter T.
Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
author_facet Mahmud, Md Shakir
Gates, Timothy J.
Megat Johari, Megat Usamah
Jashami, Hisham
Bamney, Anshu
Savolainen, Peter T.
author_sort Mahmud, Md Shakir
title Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
title_short Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
title_full Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
title_fullStr Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
title_full_unstemmed Do Dynamic speed feedback signs impact drivers differently based on speeding tendencies? Insights from applications at select critical roadway contexts
title_sort do dynamic speed feedback signs impact drivers differently based on speeding tendencies? insights from applications at select critical roadway contexts
publisher Elsevier
publishDate 2023
url http://psasir.upm.edu.my/id/eprint/107385/1/107385.pdf
http://psasir.upm.edu.my/id/eprint/107385/
https://www.sciencedirect.com/science/article/pii/S1369847823001857
_version_ 1814936549781929984
score 13.211869

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