Nebraska Revised Statutes Chapter 60. Motor Vehicles § 60-6,186. Speed; maximum limits; signs

(a) Twenty-five miles per hour in any residential district;

(b) Twenty miles per hour in any business district;

(c) Fifty miles per hour upon any highway that is gravel or not dustless surfaced;

(d) Fifty-five miles per hour upon any dustless-surfaced highway not a part of the state highway system;

(e) Sixty-five miles per hour upon any four-lane divided highway not a part of the state highway system;

(f) Sixty-five miles per hour upon any part of the state highway system other than an expressway, a super-two highway, or a freeway;

(g) Seventy miles per hour upon an expressway or a super-two highway that is part of the state highway system;

(h) Seventy miles per hour upon a freeway that is part of the state highway system but not part of the National System of Interstate and Defense Highways; and

(i) Seventy-five miles per hour upon the National System of Interstate and Defense Highways, except that the maximum speed limit shall be sixty-five miles per hour for: