Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows
Highway exit ramps play a crucial role in ensuring the safe and efficient operation of road networks. As automated vehicles progressively integrate into highways, it is essential to investigate whether these exit ramps can accommodate the safe and efficient operation of heterogeneous traffic flows....
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Infrastructures |
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| Online Access: | https://www.mdpi.com/2412-3811/10/4/88 |
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| _version_ | 1850144035376726016 |
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| author | Zixuan Zhang Zhenxing Niu Yichen Liu Yan Li |
| author_facet | Zixuan Zhang Zhenxing Niu Yichen Liu Yan Li |
| author_sort | Zixuan Zhang |
| collection | DOAJ |
| description | Highway exit ramps play a crucial role in ensuring the safe and efficient operation of road networks. As automated vehicles progressively integrate into highways, it is essential to investigate whether these exit ramps can accommodate the safe and efficient operation of heterogeneous traffic flows. This study constructed a basic simulation test using the SUMO simulation platform to analyze the adaptability of motorway exit ramps in a heterogeneous traffic environment. The simulation model incorporated the Krauss car-following model for the longitudinal dynamics of manual-driving vehicles, the ACC/CACC car-following model for automated vehicles, the LC2013 lane-changing model for manual-driving vehicles, and the game-theoretic lane-changing model for automated vehicles. The results reveal that in the absence of automated vehicles, the comprehensive cost is minimized with a deceleration lane length of 215 m, offering superior adaptability compared to the current standard of 180 m. As the proportion of automated vehicles gradually increases to surpass 40%, the rate of improvement in traffic flow, operational speed, and overall operational costs diminishes. Under these conditions, heterogeneous traffic flows exhibit limited adaptability to the existing road infrastructure. However, when the deceleration lane is extended to 200 m, the exit ramp shows optimal adaptability for heterogeneous traffic flows. |
| format | Article |
| id | doaj-art-5d8f715773b247bfb129ef4e990237d7 |
| institution | OA Journals |
| issn | 2412-3811 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Infrastructures |
| spelling | doaj-art-5d8f715773b247bfb129ef4e990237d72025-08-20T02:28:28ZengMDPI AGInfrastructures2412-38112025-04-011048810.3390/infrastructures10040088Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic FlowsZixuan Zhang0Zhenxing Niu1Yichen Liu2Yan Li3School of Transportation Engineering, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaXPCC Construction & Engineering (Group) Co., Ltd., Urumqi 830002, ChinaThe Key Laboratory of lntelligent Construction and Maintenance of CAAC, Xi’an 710064, ChinaHighway exit ramps play a crucial role in ensuring the safe and efficient operation of road networks. As automated vehicles progressively integrate into highways, it is essential to investigate whether these exit ramps can accommodate the safe and efficient operation of heterogeneous traffic flows. This study constructed a basic simulation test using the SUMO simulation platform to analyze the adaptability of motorway exit ramps in a heterogeneous traffic environment. The simulation model incorporated the Krauss car-following model for the longitudinal dynamics of manual-driving vehicles, the ACC/CACC car-following model for automated vehicles, the LC2013 lane-changing model for manual-driving vehicles, and the game-theoretic lane-changing model for automated vehicles. The results reveal that in the absence of automated vehicles, the comprehensive cost is minimized with a deceleration lane length of 215 m, offering superior adaptability compared to the current standard of 180 m. As the proportion of automated vehicles gradually increases to surpass 40%, the rate of improvement in traffic flow, operational speed, and overall operational costs diminishes. Under these conditions, heterogeneous traffic flows exhibit limited adaptability to the existing road infrastructure. However, when the deceleration lane is extended to 200 m, the exit ramp shows optimal adaptability for heterogeneous traffic flows.https://www.mdpi.com/2412-3811/10/4/88exit rampheterogeneous traffic flowtraffic flow modelSUMO simulationadaptability analysis |
| spellingShingle | Zixuan Zhang Zhenxing Niu Yichen Liu Yan Li Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows Infrastructures exit ramp heterogeneous traffic flow traffic flow model SUMO simulation adaptability analysis |
| title | Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows |
| title_full | Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows |
| title_fullStr | Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows |
| title_full_unstemmed | Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows |
| title_short | Adaptive Analysis of Freeway Off-Ramps Incorporating Heterogeneous Traffic Flows |
| title_sort | adaptive analysis of freeway off ramps incorporating heterogeneous traffic flows |
| topic | exit ramp heterogeneous traffic flow traffic flow model SUMO simulation adaptability analysis |
| url | https://www.mdpi.com/2412-3811/10/4/88 |
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