Jon, it is very distinctive. Fortunately, they did not add Battenberg rectangles to the rear of the body, which I always thought were not a very attractive enhancement on the West Sussex appliances.
Agreed about the red/yellow stickers on those scanias that still had the white stripes. Battenburg was never "scientifically" proven to be better than anything else (even in the dark blue/yellow complementary colours set-up), any 'tests' amounted to showing people pictures of battenburg cars compared to cars with minimal fluorescent/reflective markings and asking them which was better. (I can't locate the original document unfortunately). So what exactly were W Sussex trying to achieve? Reflective markings did still not outline the side of the vehicle and, like many brigades to this day, they did not have blue lights on the side of the vehicle, which is essential to give it an outline at night. More antics by clueless idiots who have no idea about how to equip a vehicle for maximum visibility of the warning equipment.
Bazza: Interesting that this decor has been adopted by very few agencies outside the UK, because - as you point out - nobody has every researched it properly. Warning lights are indeed better than paint or vinyl stripes or patterns, but here in the US there are quire a few examples where a plethora of colored warning lights can sometimes be very confusing too! I always thought the West Sussex combination of stripes and squares in different colors made their trucks look like two different vehicles had somehow ended up glued together. Very odd.
Added by Jon Godden on 31 August 2023.