Cypress Homeowners Association East

We need to do something about the speed-racers in our neighborhood. I have 2 children and it?’s very difficult for me to let them play in the front yard in fear that they might step-off into the street. Some of these drivers are easily pushing 40-45 mph at times; that?’s too fast to break for child that is running across the street to fetch a ball. Any suggestions??? Speedbumps are ugly but probably necessary.