Implementation of a V2P-Based VRU Warning System With C-V2X Technology

Cellular vehicle-to-everything(C-V2X) technology can protect vulnerable road users(VRUs) in traffic accidents. Smartphones are the most common portable devices for VRUs, but they do not support direct communication between vehicles and pedestrians. To address this problem, we propose a vehicle-to-pe...

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Main Authors: Changlong Zhang, Jimin Wei, Shibo Qu, Changying Huang, Jingang Dai, Peipei Fu, Zhixiong Wang, Xinquan Li
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10175872/
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author Changlong Zhang
Jimin Wei
Shibo Qu
Changying Huang
Jingang Dai
Peipei Fu
Zhixiong Wang
Xinquan Li
author_facet Changlong Zhang
Jimin Wei
Shibo Qu
Changying Huang
Jingang Dai
Peipei Fu
Zhixiong Wang
Xinquan Li
author_sort Changlong Zhang
collection DOAJ
description Cellular vehicle-to-everything(C-V2X) technology can protect vulnerable road users(VRUs) in traffic accidents. Smartphones are the most common portable devices for VRUs, but they do not support direct communication between vehicles and pedestrians. To address this problem, we propose a vehicle-to-pedestrian collision warning system that includes a phone case designed for the smartphone. It allows VRUs to communicate directly with connected vehicles(CVs) through C-V2X. A collision warning method based on s-t-coordinates is proposed to help VRUs to avoid collision with CVs on both straight and curved roads. Firstly, the World Geodetic System-1984(WGS-84) coordinates of the VRU and CV are transformed to Universal Transverse Mercator(UTM) coordinates. Then the s-t-coordinates of the VRU and CV are calculated. The lateral and longitudinal distance between them is determined. Finally, the time-to-collision(TTC) is used to determine the time to alert the VRU and the driver. To verify the effectiveness of this system, we conduct experiments on communication, positioning, and scenario. The communication experiments show that the system can communicate effectively with low latency and its reliable communication range is more than 200 meters in different scenarios. The positioning experiments show that the average positioning accuracy of the phone case is 0.83 meters in the open-sky scenario, which satisfies the lane-level positioning requirement for VRU applications. The scenario experiments indicate that our method can alert the driver and VRU on both straight and curved roads. The comparative experiments illustrate that our method outperforms the conventional method(CM) and the existing pedestrian alert system(PAS).
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spelling doaj.art-23d6333349754599925ec554eaa1cb732023-07-14T23:00:35ZengIEEEIEEE Access2169-35362023-01-0111699036991510.1109/ACCESS.2023.329312210175872Implementation of a V2P-Based VRU Warning System With C-V2X TechnologyChanglong Zhang0https://orcid.org/0000-0001-7965-4290Jimin Wei1https://orcid.org/0000-0002-5900-2268Shibo Qu2https://orcid.org/0000-0003-1675-5371Changying Huang3Jingang Dai4Peipei Fu5Zhixiong Wang6Xinquan Li7V2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaV2X and Cooperative ITS Department, Changsha Intelligent Driving Institute Company Ltd., Changsha, ChinaCellular vehicle-to-everything(C-V2X) technology can protect vulnerable road users(VRUs) in traffic accidents. Smartphones are the most common portable devices for VRUs, but they do not support direct communication between vehicles and pedestrians. To address this problem, we propose a vehicle-to-pedestrian collision warning system that includes a phone case designed for the smartphone. It allows VRUs to communicate directly with connected vehicles(CVs) through C-V2X. A collision warning method based on s-t-coordinates is proposed to help VRUs to avoid collision with CVs on both straight and curved roads. Firstly, the World Geodetic System-1984(WGS-84) coordinates of the VRU and CV are transformed to Universal Transverse Mercator(UTM) coordinates. Then the s-t-coordinates of the VRU and CV are calculated. The lateral and longitudinal distance between them is determined. Finally, the time-to-collision(TTC) is used to determine the time to alert the VRU and the driver. To verify the effectiveness of this system, we conduct experiments on communication, positioning, and scenario. The communication experiments show that the system can communicate effectively with low latency and its reliable communication range is more than 200 meters in different scenarios. The positioning experiments show that the average positioning accuracy of the phone case is 0.83 meters in the open-sky scenario, which satisfies the lane-level positioning requirement for VRU applications. The scenario experiments indicate that our method can alert the driver and VRU on both straight and curved roads. The comparative experiments illustrate that our method outperforms the conventional method(CM) and the existing pedestrian alert system(PAS).https://ieeexplore.ieee.org/document/10175872/C-V2XVRUsmartphoneV2Pphone caseconnected vehicle
spellingShingle Changlong Zhang
Jimin Wei
Shibo Qu
Changying Huang
Jingang Dai
Peipei Fu
Zhixiong Wang
Xinquan Li
Implementation of a V2P-Based VRU Warning System With C-V2X Technology
IEEE Access
C-V2X
VRU
smartphone
V2P
phone case
connected vehicle
title Implementation of a V2P-Based VRU Warning System With C-V2X Technology
title_full Implementation of a V2P-Based VRU Warning System With C-V2X Technology
title_fullStr Implementation of a V2P-Based VRU Warning System With C-V2X Technology
title_full_unstemmed Implementation of a V2P-Based VRU Warning System With C-V2X Technology
title_short Implementation of a V2P-Based VRU Warning System With C-V2X Technology
title_sort implementation of a v2p based vru warning system with c v2x technology
topic C-V2X
VRU
smartphone
V2P
phone case
connected vehicle
url https://ieeexplore.ieee.org/document/10175872/
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AT jingangdai implementationofav2pbasedvruwarningsystemwithcv2xtechnology
AT peipeifu implementationofav2pbasedvruwarningsystemwithcv2xtechnology
AT zhixiongwang implementationofav2pbasedvruwarningsystemwithcv2xtechnology
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