The minimum following distance behind another vehicle that should be maintained is typically 3-4 seconds. This allows enough time to react in case the vehicle in front suddenly stops or slows down.
30
You're talking about for vehicle breakdowns? You must have a minimum of three.
4 seconds
1 meter = 3 feet
When you park your vehicle.
Driving licence
You should always check your gauges, seat belt, and mirrors after you start your car.
There should be a minimum of 10 inches.
30
30 seconds
At minimum 3 seconds. If the road conditions are adverse, it should be 5 seconds or more.