The Effectiveness of a Speed Hump in the Middle of an Intersection: Impact of Speed Reduction and Spillover Effects on Driver Behaviour during Roadside Checking
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- NAKAI Hiroshi
- Graduate School of Maritime Sciences, Kobe University Graduate School of Human Sciences, Osaka University
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- USUI Shinnosuke
- Graduate School of Human Sciences, Osaka University
Bibliographic Information
- Other Title
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- 交差点内の台形ハンプが通過ドライバーに及ぼす影響―速度抑制効果の持続性とその波及性―
- コウサテン ナイ ノ ダイケイ ハンプ ガ ツウカ ドライバー ニ オヨボス エイキョウ ソクド ヨクセイ コウカ ノ ジゾクセイ ト ソノ ハキュウセイ
- Impact of Speed Reduction and Spillover Effects on Driver Behaviour during Roadside Checking
- ―速度抑制効果の持続性とその波及性―
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Abstract
The effects of a speed hump constructed in the middle of a T-shaped intersection on the behaviour of drivers turning right onto a major road were studied for five different observation periods (0 (baseline) : before construction, I : immediately after, II : three months after, III : six months after, and IV : one year after). Comparing the data of periods I—IV with that of the baseline period, the hump was effective in reducing the speed of vehicles entering the intersection ; however, this effectiveness gradually reduced. Moreover, for periods I and II, a positive spillover effect of increased number of head turns for roadside checking was seen. On the other hand, the following negative spillover effect was observed for periods I and II : the number of vehicles stopping at the stop sign during these periods was less than that during the baseline period. These results indicate that, from the viewpoint of assessing risk compensation, it is important to evaluate the effectiveness of traffic safety measures such as speed humps by studying not only their effects on the vehicle speed but also their spillover effects such as changes in drivers' behaviour. Then, safety countermeasures can be implemented to offset the negative spillover effects.
Journal
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- The Japanese Journal of Ergonomics
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The Japanese Journal of Ergonomics 47 (5), 222-228, 2011
Japan Ergonomics Society
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Details 詳細情報について
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- CRID
- 1390282679517337088
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- NII Article ID
- 10031159627
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- NII Book ID
- AN00199371
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- ISSN
- 18842844
- 05494974
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- NDL BIB ID
- 11281734
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed