<P> Interstate 495, which forms a bypass around Wilmington, features changeable speed limit signs for environmental purposes . These signs typically display a 65 mph (105 km / h) speed limit, but this limit changes to 55 mph (89 km / h) on days when air quality is a concern . The limit is also lowered during construction, weather conditions, and when accidents occur . </P> <P> All neighborhoods and subdivisions in Delaware have a maximum speed limit of 25 mph (40 km / h) as set by state law . Frequent ad campaigns on in - state radio stations remind residents of this (as of January 2013). </P> <P> Florida has a maximum speed limit of 70 mph (110 km / h), found on freeways, including rural Interstate Highways, some urban freeways including I - 4 in Lakeland, I - 75 in Tampa and Miami (where I - 75 ends), I - 95 near Daytona Beach and from Military Trail to Florida State Route 706 in Palm Beach County, portions of the Orlando area Toll Roads such as SR 417 and SR 429, Florida's Turnpike through Port St Lucie and Orlando, I - 10 close to Tallahassee, and most other rural limited access toll roads such as the Suncoast Parkway and the Beachline Expressway and rural portions of Florida's Turnpike . 65 mph (105 km / h) is typical on rural 4 - lane highways (such as US - 19 north of St. Petersburg, among other US Highways) as well as most other urban freeways and tollways . Rural two - lane roads typically have a speed limit of 55 mph (89 km / h) (the default limit for such roads), although FDOT is permitted to post 60 mph (97 km / h) on appropriately - suited highways . This is typically done on very rural state roads (such as SR 471) and US Highways (such as US 98 along most of the state's panhandle). </P> <P> Florida typically does not post night speed limits, but there are a few exceptions . For the most part, these night time reduced speeds are located in wildlife preserves for such endangered species as the Florida panther and the key deer . Most of the Tamiami Trail through the Big Cypress National Preserve has a 45 mph (72 km / h) night speed limit . On some stretches of road where the speed limit is reduced at night, the daytime speed limit sign is non-reflective, such that at night, only the night limit is visible . </P>

The florida speed limit for rural interstate highways unless noted otherwise is generally