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IMPACT OF WORK ZONES ON SPEED VARIATION DURING WIDENING OF THE HIGHWAY –A CASE STUDY

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Author(s): VIDYA. R | Dr.S.MOSES SANTHAKUMAR | Dr.SAMSON MATHEW

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 4;
Issue: 2;
Start page: 546;
Date: 2012;
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Keywords: Construction Stages | Four laning | Work zone.

ABSTRACT
Reconstruction and rehabilitation of highways are vital for the infrastructure development of the country,meeting the transportation demands of the increasing population. Therefore Construction work zones are inevitable, during which, lane closures and diversions are necessary. Many work zones are not adequately designed resulting in delay and drastic speed reduction which increases vehicle operating costs as well as delay costs. Hence, the strategies for traffic and work zone management should be concentrated upon for ensuringsafety, comfort and speed. The research aims to study and assess the impact of work zones on Speed characteristics during widening of a highway. The variation of speed in different construction work zones is analysed during different construction stages in different stretches with a case study of the Four Laning project of Trichy-Thanjavur Section of the NH-67. An analysis of variance confirms that the differences in mean speeds are statistically significant in the approach zone and terminal transition zone at the 95% confidence level both in stage II and stage III respectively.
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