Correct answer
No, they may be used when necessary to prevent a crash.
No. R-310 prohibits audible warnings on the stretch except when needed to prevent a crash. It does not permit horn use to greet someone, express impatience or merely because the driver is a novice.
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All options
No, they may be used when necessary to prevent a crash.
Yes, they are prohibited without any exception.
No, novice drivers may use them freely.
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