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A proposed California bill aims to keep certain new vehicles from exceeding the speed limit by more than 10 mph. The bill calls for tech to electronically limit a vehicle's speed starting with the ...
The highest posted speed limit in the country is 85 mph (137 km/h) and can be found only on Texas State Highway 130, a toll road that bypasses the Austin metropolitan area for long-distance traffic. The highest speed limit for undivided roads is 75 mph (121 km/h) in Texas. Undivided road speed limits vary greatly by state.
When children are considered present, California law states the drivers must follow the posted school zone speed limit. Any driver caught going faster than that speed limit could be issued a ...
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The technology, known as intelligent speed assistance, uses GPS technology to compare a vehicle's speed with a dataset of posted speed limits. Once the car is at least 10 mph (16 kph) over the speed limit, the system would emit “a brief, one-time visual and audio signal to alert the driver.”
Speed limits in California are mandated by statute to be set: (1) at or below the 85th percentile operating speed; [23] [24] as determined by a traffic and engineering survey [25] —this is the speed that no more than 15% of traffic exceeds; or (2) the prima facie limits mandated when certain criteria are met as described in the vehicle code ...
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The actual overturning speed of a train is much higher than the limits set by the speed formula, which is largely in place for passenger comfort. There is no hard maximum unbalanced superelevation for European railways, some of which have curves with over 11 inches (280 mm) of unbalanced superelevation to permit high-speed transportation. [15]