No person shall drive or operate a motor vehicle, motorcycle, bicycle, motor-driven cycle, motor-assisted cycle, or any other vehicle of any kind upon a public street, highway, parkway or alley within the corporate limits of the city at any speed greater than is reasonable and prudent under the circumstances then existing. It is determined and declared that a reasonable and safe prima facie maximum speed limit in all of the streets and roads within the corporate limits of the city is 30 miles per hour, except as follows:
(1) 
Designated school zones, which shall have a maximum rate of speed of 20 miles per hour or as otherwise set forth in section 20.03.053;
(2) 
Highland Village Road, which shall have a maximum rate of speed of 35 miles per hour;
(3) 
Village Parkway; and
(4) 
As may otherwise be provided in this division.
(1999 Code, sec. 86-46)
It shall be unlawful and an offense for any person to operate a motor vehicle on the streets designated by this section at a speed greater than the speed designated by this section, for that street or portion of that street. Any speeds in excess of the limits set forth in this section shall be prima facie evidence that such speed in neither reasonable nor prudent under the facts and circumstances.
Street
Portion of Street
Speed
(miles per hour)
F.M. 407
From the centerline of Tartan Trail to the centerline of Chinn Chapel Road
45
 
From the centerline of Tartan Trail to the centerline of Briarhill Boulevard Road
45
 
From Briarhill Boulevard to the east city limits
40
FM 2499
From its intersection with the north right-of-way line of Castlewood/Northwood Boulevard north to the city limits
50
 
From its intersection with the north right-of-way line of Castlewood/Highland Shores Boulevard north to its intersection with the north right-of-way line of Castlewood/Northwood
45
 
From the common city limits line with the Town of Flower Mound north to its intersection with the north right-of-way line of Castlewood/Highland Shores Boulevard
40
Post Oak Street
From Springway Street to Pen Jay Lane
10
(1999 Code, sec. 86-47; Ordinance 2020-1275 adopted 7/14/20)
(a) 
Upon the basis of an engineering and traffic investigation made as authorized by the provisions of Texas Transportation Code section 545.356, the prima facie speed limits indicated in this section for vehicles are hereby determined and declared to be reasonable and safe. Such speed limits are hereby fixed for vehicles traveling upon the following named streets and highways, or parts thereof, on school days during the hours:
(1) 
Described on official school zone speed limit signs; or
(2) 
When school zone signs bearing a flashing amber light and located at such zones are in operation.
(b) 
When the effective times for a school zone speed limit appear on a school zone speed limit sign that is also equipped with flashing amber lights, the written times appearing on the sign shall control and be in force notwithstanding the failure of the lights to be flashing or otherwise operating during such times.
Street
Portion of Street
Speed
(miles per hour)
Briarhill Boulevard
From its intersection with Farm-to-Market Road 407 north to its intersection with Highland Shores Boulevard
20
Farm-to-Market Road 407
From its intersection with Tartan Trail easterly for a distance of 998 feet
30
Tartan Trail
From its intersection with Braemar Lane westerly a distance of 600 feet
20
Barnett Boulevard
From its intersection with Farm-to-Market Road 407 north to its intersection with LISD property line a distance of 1,381 feet
20
(c) 
Any person violating any of the provisions or terms of this section shall be punished by a fine not to exceed the sum of Two Hundred Dollars ($200.00) for each offense; and each and every day such violation shall continue shall be deemed to constitute a separate offense.
(1999 Code, sec. 86-48; Ordinance 2025-1325 adopted 6/24/2025)
School zone and speed limit signs in conformity with the manual and specifications for uniform traffic-control devices, as adopted by the state transportation commission, are authorized and directed to be erected and maintained at the appropriate locations, as specified in this division, and as determined by the chief of police.
(1999 Code, sec. 86-50)