BMW has launched an updated ‘Professional’ navigator with so-called ‘Real Time Traffic Information (RTTI).
Cars must also be ordered with Bluetooth telephone preparation with telematics and RTTI can be seen remotely when drivers plan routes on a website.
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The news system replaces radio-based Traffic Message Channel (TMC) for information on traffic disruptions. This information is not always fast or accurate enough to help steer clear of delays ahead.
RTTI is claimed to provide a precise account of current traffic situations in real time because the information presented is based on significantly greater sources of data. It combines TPEG (Transport Protocol Expert Group) with the GSM cellular network. By integrating this data with the SIM card built into the vehicle, traffic information can be transmitted in real time.
Traffic information is presented on the map by using a colour-coding system indicating how well traffic is flowing. The system provides superior accuracy as road networks can be divided into distances as short as 500m and the information is automatically updated every three minutes allowing the driver to actively monitor whether the traffic situation is improving or worsening.
When destination guidance is active the system also monitors traffic flow away from the predetermined route to calculate which route is the most time efficient and can recommend for or against alternatives. This information provides the driver with the knowledge and option of accepting the traffic jam ahead if the alternative routes offer no time saving benefits. It also ensures that if the system diverts the driver from congested roads they are not directed into heavier traffic.
Coverage includes all major road networks and motorways in the UK as well as pan-European networks for journeys abroad.
