[gambiting]

"There seem to be hundreds of accidents like this [1] annually where large trucks smash into cars stopped at red lights or that have slowed down during traffic jams."

Isn't that solved by the automatic collision detection with emergency braking, as implemented by Volvo?[1]

[1]https://www.youtube.com/watch?v=ridS396W2BY

[Hytosys]

If I'm not mistaken, the OP is postulating an avoidance mechanism for the front ("victim") car, not the rear car. Indeed the rear car is at a higher risk of injury than the front car in read-end accidents.