Theory Mastery

Challenge: Speed signs A: maximum, matrix sign, advisory and zone

Most students know the round red-bordered sign well, but confuse the blue advisory sign and the digital matrix sign with each other — they often call the blue sign 'A3'. The CBR exam designer knows this, and builds exactly on it: whoever doesn't know the shape code flawlessly also misses why a matrix sign IS binding and a blue sign is not.

Topic: Speed signs A: maximum, matrix sign, advisory and zone

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