The unit consists of a truck mounted tank,
facilities for heating the bitumen, and a
spraying apparatus mounted at the rear
of the vehicle. In this picture the spray
bar is folded up for travelling purposes.

A hose attached to the pump unit on the
sprayer enables the operator to spray
small and odd shaped areas with a hand
lance or wand.

Modern spray units are designed for one
operator functioning, with all tasks being
performed from the truck cabin during
spraying.

The unit shown above is fitted with dual
spraybars which enables the rate of
bitumen sprayed to be varied laterally
across the width of spraying.