Device for measuring the temperature of water covering a road surface

1. A test vehicle for measuring conditions on a road surface covered with water, the test vehicle comprising:

a sprinkler for sprinkling the road surface with water taken from aboard the test vehicle;

a temperature measurement device; and

a tire to be tested, the tire being positioned downstream from the sprinkler and upstream of the temperature measurement device when considering a direction of travel of the test vehicle,

wherein, when the test vehicle is running, the tire drives over sprinkled water from the sprinkler, and the temperature measurement device measures a water temperature of the sprinkled water over which the tire has driven, and

wherein the temperature measurement device includes:

a measurement member for measuring water temperature,

a channelling unit, which directly channels water covering the road surface, the channelling unit including a measuring chamber for measuring a temperature of the channelled water, and the measurement member including a temperature measuring head situated in the measuring chamber, and

a driving unit, which causes the measurement member and the channelling unit to be driven over the road surface in such a way that the temperature measuring head is situated at a distance from the road surface.

2. The test vehicle according to claim 1 , further comprising a suspension unit, which suspends the temperature measurement device with respect to the test vehicle.

3. The test vehicle according to claim 1 , further comprising a water storage unit that includes a cold source and a hot source, wherein water from the cold source has a lower temperature than water from the hot source.

4. The test vehicle according to claim 3 , further comprising a mixer, which mixes the water from the cold source and the water from the hot source.