Road vehicle navigation system

摘要

The navigation system has a computer circuit (1) to analyse received traffic information. The computer circuit (1) calculates a first static route without taking into account the traffic information, and a second dynamic route taking the traffic information into account. The computer also determines the position of the vehicle using at least one sensor signal. The system also has an output device to output route information provided by the computer circuit (1). The computer circuit (1) provides selection information to the output device (6) to offer a second route as an alternative route to the first route. The traffic information may be RDS information and/or RDS/TMC information. Alternatively the traffic information may be information transmitted via a GSM network.