Safe distance is 2 seconds, or 4 car lengths. More if snow is on the ground or its raining.
A waterway is for ships, a highway is for cars.....That simple....
It depends usually a hybrid car such as a Toyota Prius gets up to 45 mpg highway compared to an average of 20-25 for normal cars
47 highway/ 36 city.
"averageCarsOnHighway"
20 km
ten feet
Six car lengths is a good distance.
The exact figure is a decimal. Between two and three cars is the American average.
Smart cars are fairly good on gas mileage. The average smart car can get up to 32 miles per gallon on the highway.
On average small cars get thirty to forty miles per gallon on highways. However, this number can vary greatly depending on different factors such as the make, model, and year of the car.
Think of software as cars on a highway. The highway represents RAM on a computer. The more RAM the bigger the highway. As you open programs more cars are put on the highway. Like rush hour traffic the computer slows down as you put on more cars. When there is a car crash because there is to many cars the computer crashes.
you should give at least a foot of space...