(a) 
Definitions.
All definitions contained within this section are for the purpose of this section only and shall have no impact on any other rule, law or ordinance unless referenced directly within said rule, law or ordinance.
Posted speed limit
means any sign or device that displays a speed limit along an alley, roadway, travelway, or temporary passageway.
Speed limit
means the maximum allowable speed under ideal conditions.
Vehicle
means any car, truck, motorcycle, moped, tractor, farm implement or motor-driven apparatus.
(b) 
Prima facie speed limits.
(1) 
Unless posted otherwise, the prima facie speed limit on any two-lane undivided streets in platted subdivisions, other than one not part of the state highway system as listed below, shall be thirty (30) miles per hour.
(2) 
Unless posted otherwise, the prima facie speed limit on any two-lane undivided streets in platted subdivisions that are not part of the state highway system shall be twenty-five (25) miles per hour.
(3) 
Unless posted otherwise, the prima facie speed limit within any area not within platted subdivisions shall be forty-five (45) miles per hour.
(4) 
Unless posted otherwise, the prima facie speed limit on any alley shall be fifteen (15) miles per hour.
(c) 
Authority to post signs.
(1) 
The city administrator may order posting of signs displaying the prima facie speed limit anywhere within the city.
(2) 
When he/she deems appropriate, the city administrator may, by executive order, declare a speed limit for any given stretch of alley, roadway, travelway, street, or temporary passageway that is higher or lower than the prima facie speed limit and said speed limit shall be effective when signs are posted designating the new speed limit.
(d) 
Offenses.
(1) 
It shall be unlawful for any driver to operate a vehicle at any speed in excess of the posted speed limit.
(2) 
It shall be unlawful for driver to operate a vehicle at any speed in excess of the prima facie speed limit.
(3) 
It shall be unlawful to violate any law related to vehicular speed of the state as contained in the Texas Transportation Code.
(e) 
Exceptions.
It shall be an exception to any and all portions of this section if the vehicle is operated by or at the specific direction of a law enforcement officer, firefighter, or ambulance personnel while in the performance of their official duties.
(f) 
Penalty.
(1) 
Any person violating any portion of this section shall be deemed guilty of a class C misdemeanor and upon conviction be punishable by a fine in accordance with the general penalty provided in section 1.01.009 of this code.
(2) 
Each act shall constitute a separate violation under this section and shall result in a separate fine.
(Ordinance 2005-02-01 adopted –/–/05; Ordinance adopting 2018 Code; Ordinance 2023-02-05 adopted 2/7/2023)
(a) 
Definitions.
All definitions contained within this section are for the purpose of this section only and shall have no impact on any other rule, law or ordinance unless referenced directly within said rule, law or ordinance.
Posted speed limit
means any sign or device that displays a speed limit along an alley, roadway, travelway, street, or temporary passageway.
School zone
means an area in the general vicinity of a public or private school, in which the prima facie speed limit is reduced during defined periods of time as a safety precaution.
Speed limit
means the maximum allowable speed under ideal conditions.
Vehicle
means any car, truck, motorcycle, moped, tractor, farm implement or motor-driven apparatus.
(b) 
School zones established.
(1) 
The traffic administrator shall establish school zones within the City Limits of the City of Lavon with careful consideration of the location of schools and the routes students may take to and from schools; and
(2) 
At the request of the Traffic Administrator, the Director of Public Works will cause appropriate signs to be erected to give motorists warning of the school zones.
(c) 
School zone times.
(1) 
School days when a yellow or orange warning light, located near the School Zone sign, is flashing;
(2) 
School days during times posted on a sign attached to or near a school zone sign;
(3) 
School days when a crossing guard, police officer or school employee is at a crosswalk to assist student in crossing the street to or from school; and
(4) 
Other such times as notice is posted to warn drivers they are entering a school zone.
(d) 
Offenses.
(1) 
It shall be unlawful for any driver to operate a vehicle at any speed in excess of the posted speed limit in a school zone.
(2) 
It shall be unlawful for driver to operate a vehicle at any speed in excess of the prima facie speed limit of 20 miles per hour in a school zone.
(e) 
Exceptions.
It shall be an exception to any and all portions of this section if the vehicle is operated by or at the specific direction of a law enforcement officer, firefighter, or ambulance personnel while in the performance of their official duties.
(f) 
Penalty.
(1) 
Any person violating any portion of this section shall be deemed guilty of a class C misdemeanor and upon conviction be punishable by a fine in accordance with the general penalty provided in section 1.01.009 of this code.
(2) 
Each act shall constitute a separate violation under this section and shall result in a separate fine.
(Ordinance 2008-09-03 adopted –/–/08; Ordinance adopting 2018 Code; Ordinance 2021-08-08 adopted 8/17/21; Ordinance 2023-09-01 adopted 9/5/2023; Ordinance 2025-08-05 adopted 8/5/2025)