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The average speed from New York to Washington DC is 43MPH which hasn't change in the last 25 years. That should give you a idea of the Interstate avg speeds. One must account for traffic, road condition, normal congestion in high traveled areas. If you mean the average speed limit, it's probably 65 MPH. In 1995 Congress repealed the national speed limit of 55 and it is now up to states again to determine the limits. About 30 states have limits of 70 MPH or higher. A few Western states have no speed limits on certain stretches of highway.

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18y ago
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12y ago

There isn't one set speed limit for the whole of the United States. While there was a nationwide 55 MPH speed limit at one point, it's been done away with for a long time, and the speed limits vary across the country in accordance with state, county, and local legislation.

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10y ago

There is no "universal" answer. State and local highways are usually around 55 or 60 MPH, but can vary. Interstate highways, turnpikes and toll highways can have higher limits, up to 70 or 75 MPH, but again, this can vary.

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13y ago

It depends on the state since each states sets their own speed limits, both max/min.

Added: Usually the minimum speed is set at 45 mph.

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15y ago

that is too broad of a question but probably around 35-65 MPH

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14y ago

There is no overall federally mandated speed limit on US highways. The speed limits are set by the individual states.

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12y ago

It varies by state and type of highway. The highest speed limit is 80, which is found on Interstate highways in Texas in rural areas.

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15y ago

60 km/h

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Q: How fast is the speed limit in the US?
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