Author(s): Gonçalves, Fábio Raul Costa ; Ribeiro, Bruno Daniel Mestre Viana ; Simões, João Henrique Vivas Santos ; Gama, Óscar Sílvio Marques Almeida ; Castro, Francisco ; Fernandes, Joao ; Costa, António ; Dias, Bruno ; Nicolau, Maria João ; Macedo, Joaquim ; Santos, Alexandre
Date: 2022
Persistent ID: https://hdl.handle.net/1822/87714
Origin: RepositóriUM - Universidade do Minho
Subject(s): Pedestrians; Safety; VANETs; VRUs
Vehicular Ad hoc Networks (VANETs) are the network that enables communications between road entities, such as vehicles, Road Side Units (RSUs), or Vulnerable Road Users (VRUs). The work presented in this paper aims to provide a methodology to prevent accidents that happen to VRUs' entities, more precisely, to pedestrians. The goal of this safety application use-case is to detect and warn the involved parties of a potentially dangerous situation when a pedestrian crosses a road in a crosswalk where direct line-of-sight detection from both parties is limited or not possible. The warning message is transmitted using Decentralized Environmental Notification Messages (DENMs) using standard communication technologies. Because the different parties may use different communication technologies, a cloud service is used as an intermediary to allow communication between vehicles (using IEEE 802.11p) and pedestrians (using Long-Term Evolution (LTE)). The results show that all the involved entities can be warned in usable time, enough for an action to be taken, such as performing an emergency brake.
