Miami applies Florida's default limits, with 30 mph the common speed on main city streets and lower posted limits in neighborhoods. Arterials often run 30 to 40 mph, while urban highways and expressways range from 55 to 70 mph.
Miami speed limits at a glance
| Road type | Limit |
|---|---|
| City streets (default) | 30 mph (48 kph) |
| Residential / school zones | 20 mph (32 kph) |
| Major roads / arterials | 40 mph (64 kph) |
| Highways through the city | 55-70 |
About speed limits in Miami
Florida statute sets default urban limits, and in Miami the typical main-street speed is around 30 mph, rising to 30 to 40 mph on larger avenues and arterials. Residential neighborhood streets are commonly posted lower, often near 20 to 25 mph. Because Florida law leaves many limits to be set by posted signs, Miami drivers should follow the signage on each corridor rather than assume a single citywide number.
Miami's defining recent change is Florida House Bill 657, signed on May 31, 2023, which authorized counties and cities to enforce school-zone speed limits with cameras. The law lets local governments cite drivers who exceed the school-zone limit by more than 10 mph while children are going to or from school and throughout the school day. Miami-Dade and several municipalities have since deployed RedSpeed camera systems under this statute.
School zones are enforced through the RedSpeed program, active from 30 minutes before the school day until 30 minutes after it ends. Cameras cite drivers more than 10 mph over the posted school-zone limit and mail a minimum 100 dollar fine to the vehicle owner. School-zone speeding also carries doubled base fines when handled as a standard citation, making these areas among the costliest places to speed in Miami.
Urban highways through Miami are generally posted 55 to 65 mph, while interstates and toll expressways such as I-95, the Palmetto and Florida's Turnpike run up to 65 to 70 mph. Limits can drop in construction or high-crash segments, so posted signs on each expressway govern.
Enforcement
Miami relies on Miami Police, Miami-Dade Police and the Florida Highway Patrol for street and expressway enforcement. Automated speed cameras are restricted to school zones under the 2023 state law; there are no general speed cameras on ordinary roads or highways.
Tolerance
There is no formal tolerance, and Florida fines start as low as 6 mph over the limit. School-zone cameras only issue citations to drivers exceeding the posted school limit by more than 10 mph.
Speeding fines in Miami
School-zone camera violations carry a minimum 100 dollar fine mailed to the owner, with options to pay, transfer liability, or contest. Officer-issued speeding fines follow Florida's statewide schedule, roughly 25 dollars for 6 to 9 mph over up to 250 dollars for 30 mph or more over, and school-zone violations double the base fine.
Frequently asked questions
What is the speed limit in Miami?
Main city streets are commonly 30 mph, with larger arterials at 30 to 40 mph and residential streets often lower. Urban highways and expressways range from 55 to 70 mph depending on the road and posted signs.
Can school zones be enforced by camera in Miami?
Yes. Florida's 2023 House Bill 657 authorized school-zone speed cameras, and Miami-Dade and several cities now use RedSpeed systems that cite drivers going more than 10 mph over the school-zone limit during the school day.
How do speed cameras work in Miami?
Cameras operate only in school zones, from 30 minutes before the school day until 30 minutes after. They cite drivers more than 10 mph over the posted school limit and mail a minimum 100 dollar fine to the registered owner.
Are there higher limits on Miami expressways?
Yes. Interstates and toll roads such as I-95, the Palmetto Expressway and Florida's Turnpike are generally posted 65 to 70 mph, with other urban highways around 55 to 65 mph.
More Florida speed limits
- Florida speed limit — statewide interstate, highway, and city limits.
Related tools
- Convert MPH to KPH — convert any speed reading between units.
- Car speed test — verify your speedometer accuracy.
- Live GPS speedometer — see your actual speed in the browser.
- Stopping distance calculator — how far you need to brake from each speed.
- US speed limits overview — federal background and national patterns.