Pennsylvania CDL Double/Triple Trailers Practice Test

What should be done before pulling a converter dolly out from under a rear trailer?

Confirm the rear trailer is supported, brakes or chocks are set, and lines are disconnected and secured Open the fifth wheel and accelerate sharply Leave the landing gear raised to avoid scraping Disconnect only the electrical cord

Correct Answer:

Confirm the rear trailer is supported, brakes or chocks are set, and lines are disconnected and secured

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