You're driving a lorry at night. What can you do to help yourself stay alert?

Possible Answers:

a. Eat a heavy meal before setting off

b. Keep plenty of cool, fresh air moving through the cab

c. Keep the cab warm and comfortable

d. Drive faster to get to your destination sooner

Think you know the answer to this theory test question?

Crown copyright material is reproduced under licence from the Driver and Vehicle Standards Agency, which does not accept any responsibility for the accuracy of the reproduction. The Driver and Vehicle Standards Agency does not endorse in any way any advertisement displayed on this website.