As part of the TRACKSS European project, CRF has developed an optical sensor able to monitor the road surface (dry, wet, ice) and to share data with other on-board sensors and systems and with the road infrastructure, with information intended for the driver, for chassis stabilisation or assisted braking systems and road infrastructure managers. Functioning of the sensor is based on a proprietary contactless spectroscopic measurement technique of the road surface. The prototype emits near-infrared radiation (SWIR) towards the road surface to be analysed. The spectral component of the radiation reflected by the asphalt is analysed, making it possible to discriminate road conditions. Starting from 2010, a new version of the device, characterised by integration of a TV camera for on-board ADAS (Advanced Driver Assistance Systems) applications will be developed as part of the 2WIDE_SENSE and CLEARVIEW projects.