When driving on a wet road, you should reduce your speed by:
1/3. Section 2.6: On a wet road, you should reduce your speed by about one-third (e.g., slow from 55 to about 35 mph).
1/3. Section 2.6: On a wet road, you should reduce your speed by about one-third (e.g., slow from 55 to about 35 mph).