Why do cars...?

Question

Why do cars go up to like 140, when the speed limit is like under 80? I just want to know...

Answer 1

the power to provide adequate accelleration at lower speeds is way more than needed to reach just 80 mph, so even a slow car will do over 100 because it needs enough power to enter the freeway, pass slower drivers, etc.

Answer 2

efficiency. to get the best fuel economy, you need to have the engine produce enough power to propel the cars weight, and all the weight it can carry, in all driving conditions. that means that the cars needs to have enough power to climb a 10% grade as long as the grapevine on interstate 10 outside los angeles, ca. and still maintain a minimum freeway speed. this results is a car that is slightly overpowered in most all other driving regimes, and with the right gearing and aerodynamics, a top speed of around 140-150 is attainable. most cars though are limited in the computer to the speed of the stock tire limits.

safety is also a factor. if you set the speed limit at 70, and all cars were designed to have a 70mph top speed, you would have no extra power for passing when needed. you would also have no extra power if you slightly overloaded the vehicle. these conditions allow for situations that you could get out of with the judicious use of power, but if you have none available to use, you end up in the middle of a nasty pile up.

Answer 3

a) General rule.--Except when a special hazard exists that requires lower speed for compliance with section 3361 (relating to driving vehicle at safe speed), the limits specified in this section or established under this subchapter shall be maximum lawful speeds and no person shall drive a vehicle at a speed in excess of the following maximum limits:

(1) 35 miles per hour in any urban district.
(1.1) 65 miles per hour for all vehicles on freeways where the department has posted a 65-miles-per-hour speed limit
(1.2) 25 miles per hour in a residence district, if the highway:

is not a numbered traffic route; and
is functionally classified by the department as a local highway.
(2) 55 miles per hour in other locations.
(3) Any other maximum speed limit established under this subchapter.

Answer 4

The control of the vehicle is in the hands of the operator. Most vehicles will exceed the speed limit at least down hill for some. There are vehicles with governors installed so they will not go past a set speed but these are usually installed by companies for their employees.

Answer 5

so you can go raceing if you want but becouse some people think you need a car that goes fast if a mustang speed was only 80 some poeple would not buy it but if it goes 150 thay thank it a race car

Answer 6

People like to feel the power, also the speed. Soon there will be landing strips for flying cars?

Answer 7

I dont now ether

Answer 8

for deutsch autobahn