Not commonly recognized is that EVs use regenerative braking. When you slow down, the motors switch to ‘generate’ mode to recharge a little.
This does not activate the brake lights, with predictable results. We’ll see how this plays out in finding fault in rear-enders.
Shouldn’t matter. It’s always ‘following too close.’
Tesla, Nissan Leaf, BMW i3 all turn on brake lights under regenerative braking. Maybe there is some EV that doesn't, as it is unregulated, but by far the majority do. Regenerative braking isn't much different from downshifting in a manual transmission and "engine braking" which doesn't trigger brake lights, and hasn't caused a rear ending crisis.