The manufactures recommendation that the Jake Brake be left in the ______ position in slippery conditions.

The manufactures recommendation that the Jake Brake be left in the ______ position in slippery conditions.

• A. ON
• B. OFF
• C. STANDBY
• D. MIDDLE

Answer: (B)

On slippery pavement you want deceleration to be as smooth and predictable as possible. The Jake Brake uses engine compression to slow the vehicle, which can cause abrupt or uneven deceleration and upset traction on slick surfaces. This makes steering harder and can lead to a skid or loss of control, especially during turning or on grades. Keeping the engine brake off lets you manage slowing with the service brakes and gentle downshifts, giving you better control and stability. Use the service brakes in a controlled, progressive way, and re-engage the Jake Brake only when conditions are dry or traction is reliable.

On slippery pavement you want deceleration to be as smooth and predictable as possible. The Jake Brake uses engine compression to slow the vehicle, which can cause abrupt or uneven deceleration and upset traction on slick surfaces. This makes steering harder and can lead to a skid or loss of control, especially during turning or on grades. Keeping the engine brake off lets you manage slowing with the service brakes and gentle downshifts, giving you better control and stability. Use the service brakes in a controlled, progressive way, and re-engage the Jake Brake only when conditions are dry or traction is reliable.