What is an experimental traffic regulation order (ETRO)?

A:

A traffic regulation order is the legal instrument by which traffic authorities implement most traffic management controls in their area, and in the case of an ETRO, it may last for up to 18 months, with extensions available in certain circumstances. Orders are designed to regulate, restrict or prohibit the use of a road.

When implementing Orders, authorities have a duty in law “to secure the expeditious, convenient and safe movement of vehicular and other traffic (including pedestrians)”.