BMW will offer drivers improved traffic information later this year, when it rolls out its new Real-Time Traffic Information (RTTI) system.

The German premium carmaker said the system, which will use traffic data from a broad range of sources, will be available this autumn as an option that can be added to the BMW ConnectedDrive package.

RTTI will be able to offer better and more detailed traffic information because it will have access to a much larger volume of data. This includes data provided by mobile-phone equipped vehicles, taxis, trucks and local authority traffic computers.

BMW said one of the key benefits will be more information about alternative routes in case of congestion.

RTTI is a successor system to BMW’s Traffic Info Plus service, which already provided supplementary information to the standard Traffic Message Channel (TMC) based system