Information technology for remote forced vehi-cle speed limits to improve road safety

Abstract

Problems. Overcoming the consequences of traffic accidents places a heavy burden on the country's health and social services. The International Transport Forum has developed the report “Striving for Zero: High Tasks and a Systematic Approach to Traffic Safety”. Forum experts consider non-compliance with the high-speed regime on roads to be a key problem in the growth of road accidents, and the use of information technologies is one of the ways to reduce accidents. Goal. Based on the analysis, we formulated the goal of the study, which consists in creating a method and device for remote forced speed limits (RFSL) of vehicles on roads in the city and outside it in accordance with the speed limit adopted at this place. The task of this article is to formulate a concept for improving road safety in Ukraine in terms of bringing vehicle speeds to the maximum allowable values for these roads (the concept is outlined and justified), as well as developing a functional diagram of a device for remote forced vehicle speed limitation. Methodology. The analytical method is research of existing systems that can remote forced speed to limit. The method of synthesis is creation the structural scheme of a new system, based on the advantages and disadvantages of analyzed systems. Results. A method of improving road safety by remote forced speed limits of cars on roads within the city and outside them in accordance with the accepted speed limit in this place is the constant transmission over mobile networks or any other communication signal carrying information about the restrictions speed in a specific place on a specific highway. This signal after reception is processed in the microprocessor control system of fuel supply to the car engine according to a certain algorithm for the purpose of maintenance of a car speed, which does not exceed the value of restriction. Moreover, the driver of the vehicle could not, even if he wanted to, compromise such a restriction. Originality. The method of remote forced speed limitation of the car works as follows. The GSM receiver (possibly another radio receiver) constantly receives a signal that carries the value of the speed allowed on this road. In a microprocessor control unit (MCU), this value is compared to a signal from a digital speedometer or speed sensor, which is the current value of the vehicle speed. The inconsistency of these two signals or exceeding the speed of the car over the allowable speed on this road is the basis for recalculation (reduction) according to the programmed algorithm by the MCU unit of the amount of fuel required to feed the injector, as well as to reduce the duration of injectors. Reducing the fuel supply to the engine cylinders lowers the speed of the car to the acceptable values. Practical value. Functional schemes of devices for realization of the offered way on the basic types of control systems of the engine in modern cars are developed. As an example, a generalized universal functional diagram of a device for remote forced limitation of vehicle speed is given.

Key words. traffic safety, speeding, remote forced vehicle speed limit, microprocessor, controller.