SLOW DRIVERS

How come everyone on A1A from Spanish river to Deerfield my normal commute love to drive under the speed limit? The snowbirds and elderly love to go 15-20 mph when the limit is 30-35 some parts. And why do some of you love to stop at those crosswalk signs that has a mini stop sign for the pedestrian in the middle of A1A?? They’re not actual stop signs it’s just a pedestrian crosswalk!!! Please drive the speed limit people!