Why it matters: Minimum speed: why this topic (currently) has no book citation here

This distinction protects you in two ways during the exam. First: if a question names a specific 'minimum speed' figure you have not seen anywhere in this chapter, that is a signal to be extra careful — not to accept it just because it 'sounds familiar'. Second: the confirmed rule — do not drive unreasonably slowly — is itself a real, frequently tested behavioural principle, and deserves your attention independent of any invented figure.