Patent ID: 7197425

Claim:
A road surface state measuring system comprising: a measuring means for measuring a distance to road surface; a scanning means for moving the measuring means to scan measurement positions of the distance to the road surface; the scanning means having a main scanning means and a sub scanning means; the scanning means moving the measuring means two-dimensionally; the main scanning means moving the measuring means in a predetermined main scanning direction to scan the measurement position; the sub scanning means moving the measuring means in a sub scanning direction orthogonal to the main scanning direction; and a calculating means for calculating texture scores used for estimating texture of the road surface based on a measurement data column of the distance to the road surface obtained by the moved measuring means, wherein the sub scanning means moves the position of the measuring means in the sub scanning direction; and the measuring means obtains a plurality of the measurement data columns corresponding to a plurality of positions in the sub scanning direction by continuously measuring the distance at predetermined measurement intervals when the measuring means is moved in the main scanning idrection by the main scanning means at the changed position and by obtaining measurement data column corresponding to the changed position.