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Modelling Lateral Width for Merging of U-Turning Vehicles in Divided Urban Roads


Affiliations
1 Department of Civil Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, India
2 Department of Civil Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, India
 

The present study was carried out to understand the lateral width for merging (LWM) characteristics and for developing LWM prediction models for U-turning vehicles. Data were collected from 14 test sections using videography. The collected data were analysed and it was observed that various operational characteristics, namely service delay, occupancy time and approaching through traffic volume influence LWM of U-turning vehicles. Subsequently, utilizing the stepwise multilinear regression method, LWM prediction models were developed in six-lane and four-lane divided urban roads. Finally, using the proposed LWM85 prediction model, a geometrical augmentation scheme has been suggested. The present study holds significance to enhance the level of service and safety at uncontrolled mid-block median openings.

Keywords

Geometrical Augmentation, Heterogeneous Traffic, Lateral Width for Merging, Mid-Block Median Opening, U-Turning Vehicles.
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  • Modelling Lateral Width for Merging of U-Turning Vehicles in Divided Urban Roads

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Authors

Tathagatha Khan
Department of Civil Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, India
Smruti Sourava Mohapatra
Department of Civil Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826 004, India

Abstract


The present study was carried out to understand the lateral width for merging (LWM) characteristics and for developing LWM prediction models for U-turning vehicles. Data were collected from 14 test sections using videography. The collected data were analysed and it was observed that various operational characteristics, namely service delay, occupancy time and approaching through traffic volume influence LWM of U-turning vehicles. Subsequently, utilizing the stepwise multilinear regression method, LWM prediction models were developed in six-lane and four-lane divided urban roads. Finally, using the proposed LWM85 prediction model, a geometrical augmentation scheme has been suggested. The present study holds significance to enhance the level of service and safety at uncontrolled mid-block median openings.

Keywords


Geometrical Augmentation, Heterogeneous Traffic, Lateral Width for Merging, Mid-Block Median Opening, U-Turning Vehicles.

References





DOI: https://doi.org/10.18520/cs%2Fv120%2Fi11%2F1768-1777