| 摘要 |
An onboard unit for a vehicle for providing information to the driver when travelling on a road portion with at least two adjacent lanes forming a common traffic area, wherein the onboard unit has a position detection device for determining the position thereof and has a measured value of the speed thereof, comprising a lane detector, connected to the position detection device, with a map memory for a digital road map for locating in the road map a lane corresponding to the determined position, a traffic jam detector for detecting a traffic jam when at least the speed measured value falls below a predefined threshold value, and an evaluation and output unit, which is connected to the lane detector and the traffic jam detector and which is configured, upon detection of a traffic jam, to output direction of travel information specific for the located lane. |
