From memory, reversing lights were initially an add-on accessory, primarily to 'see' where you were going.
Later, legislation controlled positioning and brightness, so no more front foglamps used on the rear.
Legislation later again introduced them as a warning signal. This is where it all went wrong. Until then, manufacturers fitted reversing lights to help see when reversing. Now, to comply with legislation, they can be smaller, and placed where they are of no use as a light, only as a signal. What we get now depends on the overall design of the lamps, within the shape of the car.
When space is limited, we get one rear fog and one reverse lamp. Europe often get two rear fogs and no reverse lamps.
When we were using the Corsa C (high level rear lamps) with BSM, I used to fit an additional reverse lamp below the bumper, behind the left rear wheel. Almost unseen when off, but lit the left kerb nicely for a left reverse in the winter evenings.
Rear fog lamp and brake lights can help when reversingin the dark. Hazards tend to make things worse due to their flashing being blinding rather than illuminating.
If female, reverse only a little, at an angle, touch the kerb or verge, stop, burst into tears over the steering wheel and wait for the guy facing you to reverse 200 yards to let you pass. It'll make him feel superior and enhance his day.
