In efforts to make Boulder Highway less dangerous for drivers, pedestrians and bicyclists, the speed limit has been lowered 10 miles per hour.
There is a stretch of Boulder Highway where it had been 55 miles per hour and has now been reduced to 45 miles per hour.
"It isn't making no difference in Vegas," said Sparkle Southward. Southward spends several hours a day at busy intersections on Boulder Highway selling sunglasses.
"These people drive like crazy," she said. "There's no speed limit to them."
Speed radars that show drivers how fast they're going are new additions to the road, along with plenty of speed limit signs.
13 Action News viewers chimed in on Twitter their thoughts about the changes.
The consensus was generally that people will still speed.
@david_schuman it's probably a good idea. Too many people in Vegas drive faster than the speed limits. We'll still see 55 mph.
— Gerald Harrelson (@gwharrelson) February 28, 2016
Just Saturday, a man turned himself in following a fatal hit-and-run Wednesday night.
Erin Breen, a traffic expert at UNLV, says more ideas are in the works to make Boulder Highway safer, and one could be as simple as a name adjustment.
"Do we still need a highway?" she said. "We could change not only the street itself, but the mindset of the people traveling on it by changing (the name) to Boulder Boulevard."
For now, Breen says there are more police on Boulder Highway ready to pull speeders over.
She said it's unlikely the speed limit will be moved any lower.