Florida roads are insane. So many of them can be found under alternate local, CR (County Route) SR (State Route) that it can surely make for hair pulling frustration. Here's a bit of info that shows SR 20 as a leg of 17-92 but I wouldn't consider that Daytona:
"U.S. Route 17 (US 17) in Florida is a northsouth United States Highway. It runs 294 miles (473 km) from the Punta Gorda, Florida Metropolitan Statistical Area northeast to the Greater Jacksonville Metropolitan Area.
The secret designation for US 17 in Florida, between Punta Gorda and Bartow, is State Road 35 (SR 35). Between Bartow and Lake Alfred, it follows SR 555, between Lake Alfred and DeLand, it follows SR 600, between Orlando and Jacksonville, it follows SR 15, and between Jacksonville and the Georgia border, it follows SR 5.
Concurrencies include US 98 between Fort Meade and Bartow, and a notably long one with US 92 between Lake Alfred and northern DeLand, which itself includes concurrencies with US 192 in Kissimmee, US 441 between Kissimmee and Orlando, SR 50 in Orlando, and SR 46 in Sanford.
Others include SR 20/SR 100 between San Mateo and Palatka, and Interstate 10 (I-10), I-95, US 23, US 1 in Downtown Jacksonville in that order."
http://en.wikipedia.org/wiki/U.S._Route_17_in_Florida