Open Access

Table 2

The parameters of Burckhardt’s model for different road surfaces.

Road surfaces c1 c2 c3
Dry asphalt surface 1.2801 23.99 0.52
Wet asphalt surface 0.8570 33.822 0.347
Dry cement surface 1.1973 25.168 0.5373
Dry pebbles surface 1.3713 6.4565 0.6691
Wet pebbles surface 0.4004 33.7080 0.1204
Snow surface 0.1946 94.129 0.0646
Ice surface 0.05 306.39 0

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.