When you park your vehicle.
You should use your emergence/parking brakes as a backup to your regular brakes.
It depends on what your needs are. If you are driving you don't need parking brakes, when you are parked your "park" gear should keep you in place but that's not always the case....
Should be the same as rear brake linings or pads
In the back should be tail lights which always come on when the headlights or parking lights are on, and stoplights which come on whenever the brakes are pressed. The stoplights should be brighter than the tail lights, but they should be separate.
Always
To the far left. Cars also have this as a hand lever that you pull upwards located between the front seats. It is also referred to as a parking brake, and should always be engage when leaving the vehicle even for a short while.
so if on an angle it won't roll away with your car
This is not a good thing to do. If you are having difficulties with your brakes, you should take it into a mechanic.
It if false that is the service brakes fail to apply the parking brake in one motion. It should pumped.
The law in the UK states that there should be two independent braking systems actually it is not a parking brake but an emergency brake
Most cars have drum brakes in rear which the parking brake manipulates. Take off both rear wheels and brake drums. You should see a wire system inside that continues out the rear of the brake housing. This is the parking brake wire. Spray it with WD-40 or an equivilant rust penetrating oil. If this does not work, disconnect the wire from the brake mechanism and the brakes should release.
on the back behind the wheel hub should be a gear looking thing that moves turn it slowly until fully ajusted