Radio Frequency Speed Bumps for Near-Zero Speed Zone Control in Nigeria

TL;DR

This paper proposes a radio frequency-based speed bump system using DSRC technology to control vehicle speed in Nigeria, aiming to reduce over speeding and road crashes without traditional physical bumps.

Contribution

It introduces a novel RF-based speed bump model that mimics traditional speed breakers and utilizes signal strength for adaptive speed limiting, eliminating the need for extra hardware.

Findings

Decelerates vehicles at 10 m/s² over 80 meters

RF system effectively mimics physical speed bumps

Signal strength-based system can replace GPS for speed control

Abstract

Over speeding is an important problem in Nigeria. The Nigerian Federal Road Safety Commission report shows that over speeding is directly responsible for over 50 percent of road crashes in the country. Speed bumps particularly on highways have not proved to be the solution; they rather contribute more to the problem. Based the advent of the dedicated short range communications (DSRC) systems defined by the IEEE 802.11p standard, we proposed a radio frequency based speed bump to mimic the operation of traditional speed breakers. The model consists of a roadside unit and an in-vehicle unit that works with the already installed speed limiter in vehicles. In our work, we showed that the RF based model is able to decelerate the vehicle at a recommended rate of 10 m/s2 over a convenient stopping distance of 80 m. Our work also showed that signal strength based adaptive speed limiter systems can be used as a reliable substitute to GPS thus eradicating the need for additional hardware in the design.