2016 Maryland Code
Title 21 - Vehicle Laws -- Rules of the Road
Subtitle 8 - Speed Restrictions
§ 21-803. Alteration of maximum speed limit by local authorities
(a) When local authority may alter specified limits. --
(1) If, on the basis of an engineering and traffic investigation, a local authority determines that any maximum speed limit specified in this subtitle is greater or less than reasonable or safe under existing conditions on any part of a highway in its jurisdiction, it may establish a reasonable and safe maximum speed limit for that part of the highway, which may:
(i) Decrease the limit at an intersection;
(ii) Increase the limit in an urban district to not more than 50 miles an hour;
(iii) Decrease the limit in an urban district; or
(iv) Decrease the limit outside an urban district to not less than 25 miles an hour.
(2) An engineering and traffic investigation is not required to conform a posted maximum speed limit in effect on December 31, 1974, to a different limit specified in § 21-801.1 (b) of this subtitle.
(b) Decreasing speed limit in school zones. -- In school zones designated and posted by the local authorities of any county:
(1) The county may decrease the maximum speed limit to 15 miles per hour during school hours, provided the county pays the cost of placing and maintaining the necessary signs; and
(2) Any municipality within each county may decrease the maximum speed limit in a school zone within the municipality to 15 miles per hour during school hours, provided the municipality pays the cost of placing and maintaining the necessary signs.
(c) When altered limits effective. -- An altered maximum speed limit established under this section is effective when posted on appropriate signs giving notice of the limit.
(d) Approval by State Highway Administration required. -- Except in Baltimore City, any alteration by a local authority of a maximum speed limit on a part or extension of a State highway is not effective until it is approved by the State Highway Administration.
(e) Decreasing speed limit in alleys. --
(1) If a local authority determines that any maximum speed limit specified in this subtitle is greater than reasonable or safe in an alley in its jurisdiction, the local authority may establish a reasonable and safe maximum speed limit for the alley.
(2) The local authority shall post a speed limit established under this subsection on appropriate signs giving notice of the speed limit.
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