FIG Peer Review Journal


Car collision warning system based on RTK GPS (2811)

Milan Horemuz (Sweden)
PhD Milan Horemuz
Royal Institute of Technology
Department of Transport and Economics
Division of Geodesy
Teknikringen 72
100 44
Corresponding author PhD Milan Horemuz (email: horemuz[at], tel.: +46 8 790 73 35)

[ abstract ] [ handouts ] [ handouts ]

Published on the web 2008-03-21
Received 2008-01-31 / Accepted 2008-03-14
This paper is one of selection of papers published for the FIG Working Week 2008 in Stockholm, Sweden and has undergone the FIG Peer Review Process.

FIG Working Week 2008
ISBN 978-87-90907-67-9 ISSN 2307-4086


Many serious traffic accidents happen when a car drives over to the opposite lane. An effective way to prevent such accidents is to mount a barrier between lanes in form of cable fence. This is quite expensive solution, which is not applicable on all roads. Therefore it is desirable to find alternative methods. One possible alternative is to use GPS, namely RTK method (Real Time Kinematics), which is capable to deliver sufficiently accurate position to compute if the car drives in correct lane and if the distance to the road edge is safe. The basic concept of the warning system is to place the actual position of the car into a precise road model and to compute if the car is outside or on its way outside the correct lane. If so, the system will warn the driver. This paper describes a prototype of such warning system. The test results show that the system works satisfactory if the GPS satellites are available.
Keywords: GNSS/GPS; Positioning; RTK; GPS; road safety; Kalman filter