Identification of Road Properties in Advanced Active Safety Applications: Overview and Conceptual Solutions

An important problem of recent active safety applications is data acquisition for parameters of tire-road interaction, especially coefficient of friction or specific forces in contact patch. Analysis of present solutions in this field allows setting off the virtual and hardware-based determination of tire grip properties.

The virtual procedures can be subclassified into

• Dynamics simulation method
• Statistical method
• Fuzzy logic method.

The hardware-based procedures are connected with

• On-board sensors of direct tire grip measurement
• On-board sensors of indirect tire grip measurement
• Off-board (on-road) sensors.

For above mentioned variants the appropriate engineering solutions are considered in the paper.

The long-term approach in road identification centers on active safety applications with on-road sensors, which are integrated in intelligent transportation systems (ITS). The paper proposes conceptual structure for this system.