Which action is typically taken first in preparation for a turn?

When preparing for a turn, the first action typically taken is to brake. This action is essential as it helps to reduce vehicle speed appropriately before entering the turn, allowing for better control and stability. Deceleration through braking ensures that the vehicle is at a manageable speed to navigate the turn without risking loss of traction or control.

Braking before a turn also provides the driver with the opportunity to assess the surroundings and make any necessary adjustments based on road conditions, traffic, and other factors. This is crucial in emergency vehicle operations, where safety and precision are paramount.

The other actions—accelerating out, dialing, and coasting—do not represent the appropriate initial steps for preparing to turn. Accelerating out is typically done after the turn has been initiated and the vehicle is aligned with the road again. Dialing may refer to adjusting components like radio or GPS during driving, which should be avoided while preparing for a turn. Coasting implies letting the vehicle slow down without applying brakes or accelerating, which is not advisable as it could lead to insufficient control prior to the turn.