About 70 mph on the rural sections of I-10.
No. Currently the fastest speed in the US is 85 mph (the first to open at that speed is SH-130 between San Antonio, TX and Austin, TX).
There is a stretch of Texas state route 130 north of San Antonio with a posted speed limit of 85 mph (137 kph).
The speed limit for boating on Ohio state park lakes between sunset and sunrise is 10 mph. It is important to adhere to this speed limit to ensure safety on the water, especially during low-light conditions.
The speed limit through a school zone can vary depending on location. Usually, the speed limit is between 15 and 25 miles per hour.
826 limit
70
That is a matter of local law, and will vary between jurisdictions.
A parameter is a limit: could be a speed limit on the road. A variable is something that changes in the system: could be the actual speed of a car.
the posted speed limit
When another speed limit sign is reached that changes the limit from the previously posted one.
The speed limit is exactly that - the speed limit. While a reasonable excess of speed might be overlooked when overtaking another vehicle, there is no guarantee. You can be pulled over and cited for speeding, still.
The posted speed limit is the max speed.