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v2x2map

V2X2MAP is an open-source receiver and live map for ITS-G5 / V2X traffic — the 5.9 GHz IEEE 802.11p messages that cars and roadside infrastructure broadcast to

lawrence

Published May 31, 2026

Original author: Peter HolzhauserOriginal source (new tab)

v2x2map

Components

Hardware components

WIZnet parts

Project description

V2X2MAP: A $20 ESP32-C5 V2X Receiver That Uses the W5500 as Its Network Backhaul Plug a small dev board into your laptop or phone, drive past modern road infrastructure, and watch live traffic messages appear on a map. This project listens to the radio messages that cars and traffic lights broadcast — and it leans on the WIZnet W5500 to send that data out to the internet. 1. What is V2X, and why listen to it? Modern cars and roadside units (RSUs) talk to each other over a dedicated 5.9 GHz band using IEEE 802.11p, the radio layer underneath Europe's ITS-G5 / C-ITS standards. They constantly…

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