"Trac" stands for traction. If/when the drive wheels slip the computer causes a deliberate misfire of the engine to reduce power to the wheels. The purpose of that power reduction is to prevent more wheel slippage since once the wheels start slipping, you have considerably less control.
Leave "Trac" engaged, it doesn't cause any problems during normal driving.
The Traction Control should be left on at all times. It has no effect on gas mileage whatsoever. TC does not work until the system detects wheel spin.
Leave the Traction Control on at all times. The only possible reason you would ever need to turn it off, is if you were trying to unstuck a stuck vehicle. It will have no effect whatsoever on mileage. It simply applies the brakes and retards the accelerator when it senses a wheel spin. You mileage will be the same on or off. Leave it on.
drive to the shoulder; stop
slow down and increase following distance
Slow down; increase following distance
Slippery conditions.
slow down, increase following distance
Every 30,000 miles or 24 months, depending on how much you drive the car and on what conditions
It should about 5k or 7k miles depending on in which conditions you are driving.
Depending on driving conditions 3000-5000 miles
Complete the conditions of your sentence or probation and reapply for your license at the DMV or Dept of Licensing.
When parking, especially on a hill, the hand brake should be fully engaged When you are driving a manual transmission vehicle, the handbrake can be partially engaged to give you better control as you push the clutch and gas when starting from a stopped position going uphill, so you don't roll backwards.