Xavier Carville hopes things will be different on the Rickenbacker Causeway after Wednesday.
Carville is a professional cyclist training for a competition in Stuart. He spends six to seven hours a day riding the causeway.
Now, six-inch-wide white humps designed to get a driver's attention if a car veers into the lane reserved for cyclists have been installed.
"A lot of people are gonna start noticing it," said Carville, pointing at the bumps.
That's the idea, says project contractor Jackie Bermudez. They're audible for drivers. "They'll hear so they won't get into the bicycle lanes," she said.
Bermudez says the thermoplastic material will also reflect day and night over a 17,000 foot-stretch of bridges between Crandon Park and the mainland.
"I'm hoping that this prevents anybody getting killed in the future," said Bermudez.