If you drive in Kentucky, the double nickel is very familiar.
"55 is very safe."
But some say this speed limit's too constricting. Two western Kentucky lawmakers are proposing a speed limit increase on some four-lane state highways from 55 to 65.
"I think it's a good idea," says Tony Lanham. He drives Highway 60 all the time and has seen all types of drivers.
"People has a tendency of pulling out in front of you, misjudging the distance between you and the intersection they pull out of," Lanham says. He adds Highway 60 can handle the higher speed, if drivers can handle it.
"I think it's a common sense thing," says Lanham. "If everybody uses their good judgment, there's areas that won't handle it. I think, for the most part, most areas will under the normal circumstances."
"I think it's a bad idea," says Perry Harney was a trucker for more than a decade. He says some roads, including parts of 60, can't handle higher speeds.
"This stretch right here, I don't think is a very good idea and further east on 60 is not a good idea," says Harney. But he also says there are some stretches, and drivers that can handle it.
"The bypass, that would be fine, because you don't have many exits for one. When you do have them, you have a little lane to merge," he says.
Both the house and senate versions of the bill have yet to get out of their respective transportation committees in Frankfort.