Section 6

A police officer may, for the purpose of giving effect to an order or direction made under section 4, or whenever he considers it necessary to do so for the preservation of law and order or for the prevention or detection of crime, erect or place barriers in or across any road, street, path, waterway or public place in a proclaimed area in such manner as he may think fit.

A police officer may take all reasonable steps to prevent any person, whether on foot or in a vehicle or vessel, from passing any such barrier and every person shall comply with any direction or signal of any such officer requiring that person to stop at or before reaching the barrier.

A police officer may use such force as may be necessary to prevent any person from passing any such barrier, which force may extend to the use of lethal weapons.