JJ Keller Entry Level Driver Training CDL Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

Question: 1 / 400

How much should you reduce your speed when entering a curve?

3 mph

5 mph

When approaching and entering a curve, it is important to reduce your speed to maintain control of the vehicle and ensure safety. A reduction of 5 mph typically provides a safe margin for navigating a curve, allowing for adequate handling while balancing stability and the ability to respond to any sudden changes in the road or traffic conditions.

Slowing down helps to counteract the centrifugal force that acts on the vehicle when turning, which is especially relevant for larger vehicles, such as those driven by CDL drivers. This margin helps prevent skidding and allows the driver more time to react if the conditions change, such as encountering debris or an obstacle.

Although other choices imply different speeds of reduction, a decrease of 5 mph is often seen as a general recommendation in various driving guidelines, making it a reasonable and practical choice for safe curve negotiation.

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10 mph

15 mph

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