Attenuation law of retroreflection coefficient for highway traffic sign retroreflective sheeting

CHEN Yan-yan; JIANG Ming

Volume 16 Issue 6

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CHEN Yan-yan, JIANG Ming. Attenuation law of retroreflection coefficient for highway traffic sign retroreflective sheeting[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 107-113.

Citation:

CHEN Yan-yan, JIANG Ming. Attenuation law of retroreflection coefficient for highway traffic sign retroreflective sheeting[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 107-113.

CHEN Yan-yan, JIANG Ming. Attenuation law of retroreflection coefficient for highway traffic sign retroreflective sheeting[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 107-113.

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Attenuation law of retroreflection coefficient for highway traffic sign retroreflective sheeting

CHEN Yan-yan^1
,,
JIANG Ming^{1, 2}

1.
School of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, China
2.
Key Laboratory of Road Safety Ministry of Transport, Research Institute of Highway Ministry of Transport, Beijing 100088, China

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Author Bio:
CHEN Yan-yan(1970-), female, professor, PhD, +86-10-67391680, cdyan@bjut.edu.cn
Received Date: 2016-03-10
Publish Date: 2016-12-25

Abstract

Abstract

The retroreflection coefficients of 230 traffic sign retroreflective sheetings set in Beijing test site of Ministry of Transport were observed continuously for thirteen years.The prediction models of attenuation values for the retroreflection coefficients of traffic sign retroreflective sheetings with different colors and types were built.The attenuation law of retroreflection coefficient with set time was analyzed.Analysis result shows that the prediction models of attenuation values for the retroreflection coefficient of white typesⅠ-Ⅲretroreflective sheetings are cubic function, logarithmic function and cubic function models respectively, and the determination coefficients are 0.581, 0.732 and 0.559 respectively.The variation amplitudes of attenuation rate for retroreflection coefficient of red types Ⅰ-Ⅲ retroreflective sheetings are 16.0%, 28.0% and 42.0% respectively, and the variation amplitudes of attenuation rates for retroreflection coefficients of retroreflective sheetings with other colors are less than 21%.So, the quadratic function and cubic function models of attenuation values for retroreflection coefficients have better fitting property, there are significant differences among attenuation laws of retroreflection coefficients for retroreflective sheetings with different colors and types, and theattenuation slows down with increase of set time.
- traffic engineering,
- traffic sign,
- retroreflective sheeting,
- retroreflection coefficient,
- attenuation law

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References(32)

References

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