Which of the following is correct about stopping distance and speed?

It will take longer to stop, and it will be harder to turn without skidding, when the road is slippery. Wet roads can double stopping distance. You must drive slower to be able to stop in the same distance as on a dry road. Reduce speed by about 1/3 (for example, slow from 55 to about 35 mph) on a wet road. [California Commercial Driver Handbook]