The newly developed RTTI system from BMW ConnectedDrive can now also be ordered as an option for the new BMW 3-Series Sedan in conjunction with a BMW navigation system. The system is mobile phone-based, using the vehicle's built-in SIM card, and has the advantage over radio-based traffic information of being faster and offering more extensive coverage. The real-time information, which is taken into account when calculating routes and diversions, is relayed to the vehicle with unrivalled reliability and precision. This means that much more data can be used to analyse the traffic situation, and that this data can be updated more frequently. RTTI covers motorways and main roads, as well as main and secondary roads in urban areas. If congestion is reported on a BMW driver's present route, the system is therefore equipped to provide precise details of an alternative route. With a wealth of detailed information at its disposal, the navigation system is always able to work out the quickest route to the driver's intended destination under the prevailing conditions. The system monitors the dynamic network connections of mobile phones in vehicles in the area to generate anonymous mobile location data. The number and speed of location changes within the mobile phone network allows an accurate picture to be obtained of current traffic flows. Further real-time data, capable of providing information about traffic jams and congestion - and therefore about extra time required for the journey - is also obtained from truck fleets and taxis whose navigation systems are linked to a control centre. Data is additionally obtained from local authority traffic management systems, which provide precise information about traffic density on urban roads. Coloured markings on the cockpit map display indicate how freely traffic is flowing on the various roads. The information is updated at three-minute intervals. Through RTTI, with its extensive data on the intricate road networks of Germany, Great Britain, France and Italy, BMW Connected Drive is moving steadily forward with the intelligent integration of driver, vehicle and outside world.