About Warning signs J: triangle, not a command: which statement is WRONG?
- J10 = level crossing WITH barriers. Dangerous crossroads is J8.
- J16 = roadworks. Level crossing with barriers is J10.
- At sign J17 (road narrowing) you are legally required to a specific, fixed lower speed.
- J-signs are warning signs, not order/prohibition signs; J8 only warns, it does not regulate priority — that follows from B-signs, shark's teeth, or the main rule.
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Correct answer: At sign J17 (road narrowing) you are legally required to a specific, fixed lower speed.
A warning sign imposes no fixed speed; you must adjust your speed yourself so that you can stop within the distance you can see
Why learners get this wrong: Sign J10 warns of a dangerous crossroads.