[Gaz64]

Jim,

Pre 2005 cars with a well adjusted hand brake should be able to stop the car albeit with less g force than all 4 wheels.

Many cars can slide to a stop if adjusted well. Some will hold well under power.

Some cars I know that have "electric park brake" are a switch operated electric servo operated cable operated mechanical handbrake within the rear brake rotors.

If the car is driven away from a stop, the electric park brake is released automatically, so impossible to drive with the park brake on.

When the switch is operated at some speed, the normal hydraulic braking system is operated, and they do stop VERY well from all 4 wheels braking.

I was a sceptic at first, until a GM trainer showed me on a drive.

If you get a chance, try it in a late model car with electric park brake.

I think that many cars that have this now would use similar architecture.