The Code of Alabama 1975
Except when a special hazard exists that requires lower speed for compliance
with Section 32-5A-170, the limits hereinafter specified or established as
hereinafter authorized shall be maximum lawful speeds, and no person shall drive
a vehicle at a speed in excess of the maximum limits.
(1) No person shall operate a vehicle in excess of 30 miles per hour in any
(Acts 1980, No. 80-434, p. 604, §8-102; Acts 1987, No. 87-408, p. 593;
Acts 1994, No. 94-617, p. 1147, §1; Acts 1996, No. 96-577, p. 913, §1.)
When local authorities may and shall alter maximum
(a) Whenever local
authorities in their respective jurisdictions determine on the basis of an
engineering and traffic investigation that the maximum speed permitted under
this article is greater or less than is reasonable and safe under the conditions
found to exist upon a highway or part of a highway, the
local authority may determine and declare a reasonable and safe maximum limit
(1) Decreases the limit at intersections;
(2) Increases the limit within an urban district but not
to more than the maximum rate of speed that may be prescribed by the Governor
under subdivision (6) of Section 32-5A-171;
(3) Decreases the limit on any street, unpaved road, or
highway under the jurisdiction and control of any county commission; or
(4) Increases the limit on any street, unpaved road, or
highway under the jurisdiction and control of any county commission but not to
more than the maximum rate of speed that is prescribed under subdivision (3) or
by the Governor under subdivision (6) of Section 32-5A-171.
(b) Local authorities in their respective jurisdictions
shall determine by an engineering and traffic investigation the proper maximum
speed for all arterial streets and shall declare a reasonable and safe maximum
limit thereon which may be greater or less than the maximum speed permitted
under this chapter for an urban district.
(c) Any altered limit established as hereinabove
authorized shall be effective at all times or during hours of darkness or at
other times as may be determined when appropriate signs giving notice thereof
are erected upon the street or highway.
(d) Any alteration of maximum limits on state highways or
extensions thereof in a municipality by local authorities shall not be effective
until the alteration has been approved by the Department of Transportation.
(e) Not more than six alterations as hereinabove
authorized shall be made per mile along a street or highway, except in the case
of reduced limits at intersections, and the difference between adjacent limits
shall not be more than 10 miles per hour.
(Acts 1980, No. 80-434, p. 604, §8-104;
Acts 1985, 2nd Ex. Sess., No. 85-998, p. 366, §2; Acts 1994, No. 94-617, p.
Uniform marking of highways and erection of traffic-control devices.
(a) The Department of Transportation is authorized to classify, designate,
and mark both interstate and intrastate highways lying within the boundaries of
(c) No local authority shall place or maintain any traffic-control device
upon any highway under the jurisdiction of the Department of Transportation
except by the latter's permission.
(Acts 1980, No. 80-434, p. 604, §2-100.)