Unless otherwise posted, the speed limit on primary and secondary state and federal highways is:

35 MPH.
55 MPH.
65 MPH.
70 MPH.
Explanation

The speed limit on primary and secondary state and federal highways is 55 m.p.h. unless there is a sign posted indicating a different speed limit. This means that you should always be aware of speed limit signs, as they take precedence over the default limit.

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