I haven't yet worked out how to make my lights stay on for more than a few seconds, when double-parked for off-loading my piano at band practice venue (there's never a proper parking space nearby and the piano is too heavy to carry more than a few yards!) So I just leave the hazard flashers on until mission is accomplished.

Three pet hates re night driving: the people who wait until they can see your retinal reflex before dipping their lights, even though you saw THEIR headlights approaching and dipped yours ages before you came face-to-face.

Speed bumps: also cause that temporary "main beam" effect, even though lights are dipped, as the oncoming car goes over the bump.

People who leave headlights on while parked on your nearside facing you: don't they know that the angulation of the beam is right in your eyes?