Introduction

Abstract

Universal vehicular communication promises many improvements in terms of accident avoidance and mitigation, better utilization of roads and resources such as time and fuel, and new opportunities for infotainment applications. However, before widespread acceptance, vehicular communication must meet challenges comparable to the trouble and disbelief that accompanied the introduction of traffic lights back then. The first traffic light was installed in 1868 in London to signal railway, but only later, in 1912, was invented the first red-green electric traffic light. And roughly 50 years after the first traffic light, in 1920, the first four-way traffic signal comparable to our today’s traffic lights was introduced.