ITS-G5 Performance improvement and Evaluation for Vulnerable Road User Safety Services

Mirjami Jutila, Johan Scholliers, Mikko Valta, Kaisa Kujanpää

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Cooperative intelligent transportation system (C-ITS) allows to improve safety of vehicles through communications between vehicles and infrastructure. C-ITS may also improve the safety of vulnerable road users (VRUs), but work on this issue is still in an early stage. ITS-G5 (IEEE 802.11p), the main technology for vehicle-to-vehicle time-critical communications, allows to deliver safety information over a rather long range with low latency, but obstacles in the link path and a large amount of vehicles sending at the same time may reduce performance. In this study, the authors assess and optimise the performance of ITS-G5 for time-critical safety conflict scenarios between vehicles and VRUs. The authors have tested various non-line-of-sight (NLOS) scenarios in urban environments and line-of-sight (LOS) simulations to support C-ITS message prioritisation and scalability with different amount of vehicles. Example use cases with NLOS include pedestrians crossing streets from behind objects, and low-visibility scenarios, e.g. when VRU is behind a vehicle, behind a queue of vehicles, between vehicles, behind trees/bushes or behind a building. The LOS simulations utilise fuzzy weighted queueing mechanism for congestion control to overcome the packet losses and for data prioritisation. Based on these results, the applicability of ITS-G5 for VRU applications is assessed and performance improved.

Original languageEnglish
Pages (from-to)126-133
Number of pages8
JournalIET Intelligent Transport Systems
Volume11
Issue number3
DOIs
Publication statusPublished - 1 Apr 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

road user
transportation system
safety
road
scenario
evaluation
performance
intelligent transportation system
communications
simulation
pedestrian
prioritization
infrastructure
services
vehicle
communication
Crosswalks
Communication
congestion
Packet loss

Keywords

  • Vulnerable Road User (VRU)
  • Intelligent Transport Systems (ITS)
  • ITS-G5
  • IEEE 802.11p
  • fuzzy flow scheduling

Cite this

Jutila, Mirjami ; Scholliers, Johan ; Valta, Mikko ; Kujanpää, Kaisa. / ITS-G5 Performance improvement and Evaluation for Vulnerable Road User Safety Services. In: IET Intelligent Transport Systems. 2017 ; Vol. 11, No. 3. pp. 126-133.
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ITS-G5 Performance improvement and Evaluation for Vulnerable Road User Safety Services. / Jutila, Mirjami; Scholliers, Johan; Valta, Mikko; Kujanpää, Kaisa.

In: IET Intelligent Transport Systems, Vol. 11, No. 3, 01.04.2017, p. 126-133.

Research output: Contribution to journalArticleScientificpeer-review

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