[buildsjets]

This is entirely dependent on how your vehicle is designed. Pulling the electronic parking brake in my car (Audi S4) at a decent speed applies maximum braking effort to all 4 wheels simultaneously. It'll practically pop your eyeballs out.

[spaetzleesser]

Interesting. Although if that brake is electronic you can't really use it as backup in case something goes wrong with the car's computer systems.