What is the first action you should take if your rear wheels start skidding?

When your rear wheels start skidding, the first action to take is to steer in the direction you want the front wheels to go. This technique is crucial because it helps to regain control of the vehicle. When the rear wheels skid, the back of the vehicle moves sideways, which can make it feel like you're losing control. By steering into the skid, you align the front wheels with the direction of travel, allowing the tires to regain traction and stabilize the vehicle.

For example, if the back of the car is sliding to the right, you should turn the steering wheel to the right. This action helps to realign the vehicle and counteracts the skid, making it more likely that you will regain control effectively and safely. It is essential to remain calm and not oversteer, as too much turning can cause the vehicle to skid in the opposite direction.

The other options, such as braking firmly or attempting to accelerate, can worsen the loss of control by causing further skidding. Turning off the engine does not address the immediate problem of regaining control over the vehicle's movement. Thus, steering in the desired direction helps you to manage the skid and regain control of the vehicle, making it the most effective first response.