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Training Handout--Speed & Space Management
2021-06-15T05:00:00Z
Traction is necessary for vehicle control. Certain road conditions cause a reduction in traction, and lower vehicle speeds are necessary.
Rain. As rain begins to fall, it mixes with oils on the road. This causes the oils to rise to the road’s surface.
- Until additional rain breaks down and washes away these oils, there is a layer of slippery oil between the vehicle’s tires and the road surface. This condition can last from a few minutes to a few hours.
- Heavy rain that results in standing water on the road can cause a vehicle’s tires to lose traction and skim along the water’s surface. This is called hydroplaning.
- In rain, vehicle speeds should be reduced by at least one-third.
Snow. When light, powdery snow sticks to the road, it forms a smooth, slick surface.
- A heavy, slushy snow can affect vehicle control. If it becomes hard packed, it can cause an ice hazard. In snow, vehicle speeds should be reduced by at least one-half.
- When determining vehicle speed in snowy conditions, you must be confident that you can safely stop and maneuver based on the road conditions.
Ice. An icy road can present more dangers than a snowy road.
- One way to check for ice formation is by feeling the front of the vehicle’s mirrors. If ice is forming there, it is also forming on the road. Also, be aware of spray off of other vehicles.
- In cold weather, if the spray stops, there is a good chance that the precipitation has frozen.
















































