A preliminary breath test is a procedure whereby the person to whom the test is administered provides a specimen of breath to be used for the purpose of obtaining, by means of a device of a type approved by the Secretary of State, an indication whether the proportion of alcohol in the person’s breath or blood is likely to exceed the prescribed limit.

A preliminary breath test administered in reliance on section 6(2) to (4) may be administered only at or near the place where the requirement to co-operate with the test is imposed.