Motorway Driving

John is driving a goods lorry with a speed limiter fitted.

This means

It is a sunny day in August and John is driving on the motorway.

When braking John should allow for at least

In wet weather John should leave a

When should John turn on his fog lights

John is driving in poor weather and experiencing cross winds.

He should be especially alert when

John is driving past a junction at night.

The reflective studs on his left will be