Impact of safety message generation rules on the awareness of vulnerable road users
Artículo
![Thumbnail](/themes/Mirage2/images/cubierta.jpg)
Open/ Download
Access note
Acceso abierto
Publication date
2021Metadata
Show full item record
Cómo citar
Lara, Tomás
Cómo citar
Impact of safety message generation rules on the awareness of vulnerable road users
Abstract
In the face of cooperative intelligent transportation systems (C-ITS) advancements, the inclusion of vulnerable road users (VRU), i.e., pedestrians, cyclists, and motorcyclists, has just recently become a part of the discussion. Including VRU in C-ITS presents new challenges, most notably the trade-off between the increase in VRU safety and the aggravation in channel congestion resulting from VRU-generated messages. However, previous studies mainly focus on network-related metrics without giving much consideration to VRU safety-related metrics. In this context, we evaluated such a trade-off with a study of motion-based message generation rules for VRU transmissions. The rules were analyzed using theoretical and simulation-based evaluations. In addition to studying the message generation rules using channel load metrics, such as channel busy ratio (CBR) and packet delivery ratio (PDR), we introduced a new metric: the VRU Awareness Probability (VAP). VAP uses the exchange of messages from active VRU to measure the probability of VRU detection by nearby vehicles. Results show that fixed message-filtering mechanisms reduce the overall channel load, but they could negatively impact VRU detection. We established the importance of quantifying the VRU awareness and its inclusion in C-ITS analysis because of its direct impact on VRU safety. We also discussed approaches that include VRU context and dynamism to improve the definition of message generation rules.
Patrocinador
Cisco University Research 2019-199458 (3696)
ANID Basal Project FB0008
Natural Sciences and Engineering Research Council of Canada (NSERC)
CGIAR
Appeared in source as:Natural Sciences and Engineering Research Council of Canada
CONICYT Chile-PFCHA/Magister Nacional 22200246
Indexation
Artículo de publícación WoS
Quote Item
Sensors 2021, 21, 3375
Collections
The following license files are associated with this item: