(1)  No person shall drive a vehicle on a highway at a speed greater than is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing. In every event, speed shall be controlled as may be necessary to avoid colliding with any person, vehicle, or other conveyance or object on or entering the highway in compliance with legal requirements and the duty of all persons to use due care.

(2)  On all streets or highways, the maximum speed limits for all vehicles must be 30 miles per hour in business or residence districts, and 55 miles per hour at any time at all other locations. However, with respect to a residence district, a county or municipality may set a maximum speed limit of 20 or 25 miles per hour on local streets and highways after an investigation determines that such a limit is reasonable. It is not necessary to conduct a separate investigation for each residence district. The minimum speed limit on all highways that comprise a part of the National System of Interstate and Defense Highways and have not fewer than four lanes is 40 miles per hour, except that when the posted speed limit is 70 miles per hour, the minimum speed limit is 50 miles per hour.

(3)  No school bus shall exceed the posted speed limits, not to exceed 55 miles per hour at any time.

(4)  The driver of every vehicle shall, consistent with the requirements of subsection (1), drive at an appropriately reduced speed when:

(a)  Approaching and crossing an intersection or railway grade crossing;

(b)  Approaching and going around a curve;

(c)  Approaching a hill crest;

(d)  Traveling upon any narrow or winding roadway; and

(e)  Any special hazard exists with respect to pedestrians or other traffic or by reason of weather or highway conditions.

(5)  No person shall drive a motor vehicle at such a slow speed as to impede or block the normal and reasonable movement of traffic, except when reduced speed is necessary for safe operation or in compliance with law.

(6)  No driver of a vehicle shall exceed the posted maximum speed limit in a work zone area.

(7)  A violation of this section is a noncriminal traffic infraction, punishable as a moving violation as provided in chapter 318. 

316.187  Establishment of state speed zones.--

(1)  Whenever the Department of Transportation determines, upon the basis of an engineering and traffic investigation, that any speed is greater or less than is reasonable or safe under the conditions found to exist at any intersection or other place, or upon any part of a highway outside of a municipality or upon any state roads, connecting links or extensions thereof within a municipality, the Department of Transportation may determine and declare a reasonable and safe speed limit thereat which shall be effective when appropriate signs giving notice thereof are erected at the intersection or other place or part of the highway.

(2)(a)  The maximum allowable speed limit on limited access highways is 70 miles per hour.

(b)  The maximum allowable speed limit on any other highway which is outside an urban area of 5,000 or more persons and which has at least four lanes divided by a median strip is 65 miles per hour.

(c)  The Department of Transportation is authorized to set such maximum and minimum speed limits for travel over other roadways under its authority as it deems safe and advisable, not to exceed as a maximum limit 60 miles per hour.

(3)  Violation of the speed limits established under this section must be cited as a moving violation, punishable as provided in chapter 318.

316.189  Establishment of municipal and county speed zones.--

(1)  MUNICIPAL SPEED.--The maximum speed within any municipality is 30 miles per hour. With respect to residence districts, a municipality may set a maximum speed limit of 20 or 25 miles per hour on local streets and highways after an investigation determines that such a limit is reasonable. It shall not be necessary to conduct a separate investigation for each residence district. A municipality may set speed zones altering the speed limit, both as to maximum, not to exceed 60 miles per hour, and minimum, after investigation determines such a change is reasonable and in conformity to criteria promulgated by the Department of Transportation, except that no changes shall be made on state highways or connecting links or extensions thereof, which shall be changed only by the Department of Transportation.

(2)  SPEED ON COUNTY ROADS.--The maximum speed on any county-maintained road is:

(a)  In any business or residence district, 30 miles per hour in the daytime or nighttime; provided that with respect to residence districts a county may set a maximum speed limit of 25 miles per hour after an investigation determines that such a limit is reasonable; and it shall not be necessary to conduct a separate investigation in each residence district.

(b)  On any other part of a county road not a business or residence district, as set forth in s. 316.183.

However, the board of county commissioners may set speed zones altering such speeds, both as to maximum and minimum, after investigation determines such a change is reasonable and in conformity to criteria promulgated by the Department of Transportation, except that no such speed zone shall permit a speed of more than 60 miles per hour.

(3)  POSTING OF SPEED LIMITS.--All speed zones shall be posted with clearly legible signs. No change in speeds from 30 miles per hour or from those established in s. 316.183 shall take effect until the zone is posted by the authority changing the speed pursuant to this section and s. 316.187. All signs which limit or establish speed limits, maximum and minimum, shall be so placed and so painted as to be plainly visible and legible in daylight or in darkness when illuminated by headlights.

(4)  PENALTY.--Violation of the speed limits established under this section must be cited as a moving violation, punishable as provided in chapter 318.

If you were cited with a speeding ticket in Miami Dade, Florida let an experienced attorney handle your case.