Hazard Lights

In Britain, hazard lights on vehicles have no legal status. Driving in Europe requires the vehicle owner to have access to a warning triangle. In the event of a breakdown, the triangle must be positioned behind the vehicle and while doing this the hazard lights are set to flashing. As soon as the triangle is positioned correctly, the lights must be turned off. The attitude in Britain has been to use these lights as a justification for illegal parking and causing an obstruction. It is as though if hazard lights are warning of something, then it's OK to act in such a way. Almost legitimising the act! The only time I have seen these lights used sensibly is on the motorway when a traffic problem/hazard has forced heavy braking. The hazard lights of the car in front can warn drivers behind of the impending dangerous conditions ahead. This is an unofficial use, but very sensible nonetheless.