For a transport unit subject to orange-panel dangerous-goods marking requirements, what front/rear arrangement applies as a general rule?

Correct answer

One panel at the front and another at the rear.

One visible orange retroreflective panel at the front and another at the rear, perpendicular to the transport unit’s longitudinal axis. This describes front/rear panels, not necessarily every required marking: tanks, bulk loads and other cases may require additional panels or placards. Not every small quantity of dangerous product requires identical marking; check applicable exemptions and rules.