Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)

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Comparative Analysis of Passenger Car Unit Estimation Methods for Multilane Divided Highways

Authors
Ramireddy Sushmitha1, *, Seelam Srikanth2, Eswar Sala3
1Assistant Professor, Civil Engineering Department, G. Pulla Reddy Engineering College (Autonomous), Kurnool, Andhra Pradesh, 518007, India
2Associate Professor, School of Civil Engineering, REVA University, Bangalore, Karnataka, 560064, India
3Assistant Professor, Civil Engineering Department, Gudlavalleru Engineering College, Gudlavalleru, Krishna (Dt), Andhra Pradesh, 521356, India
*Corresponding author. Email: susmitharamireddy@gmail.com
Corresponding Author
Ramireddy Sushmitha
Available Online 17 March 2025.
DOI
10.2991/978-94-6463-662-8_11How to use a DOI?
Keywords
Speed; Composition; Time Headway; Projected Area; Multilane Highways; Passenger Car Unit
Abstract

This study investigates the estimation of Passenger Car Units (PCU) for various vehicle types under heterogeneous traffic conditions on multilane intercity highways. Data was collected from three highway sections, and PCU values were derived using three different methods: Dynamic PCU, Modified Dynamic PCU, and Multiple Non-Linear Regression (MLNR). The results revealed that the MLNR method provided higher PCU estimates for larger vehicles, with values of 1.42 for big utility cars and 4.74 for trucks in Section I, while the modified dynamic method yielded 1.39 for big utility cars and 4.11 for trucks. Conversely, the dynamic method yielded the lowest estimates, with PCUs of 1.36 for big utility cars and 3.98 for trucks. Additionally, the modified dynamic PCU method consistently outperformed the dynamic method across all vehicle types except for big utility cars. These findings underscore the effectiveness of the modified dynamic and MLNR methods for accurate PCU assessment, facilitating better traffic management and capacity planning.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)
Series
Advances in Engineering Research
Publication Date
17 March 2025
ISBN
978-94-6463-662-8
ISSN
2352-5401
DOI
10.2991/978-94-6463-662-8_11How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Ramireddy Sushmitha
AU  - Seelam Srikanth
AU  - Eswar Sala
PY  - 2025
DA  - 2025/03/17
TI  - Comparative Analysis of Passenger Car Unit Estimation Methods for Multilane Divided Highways
BT  - Proceedings of the International Conference on Advanced Materials, Manufacturing and Sustainable Development (ICAMMSD 2024)
PB  - Atlantis Press
SP  - 129
EP  - 141
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-662-8_11
DO  - 10.2991/978-94-6463-662-8_11
ID  - Sushmitha2025
ER  -