In Ca. it means a loading zone for passengers or mail.
In Az. is means unrestricted parking unless otherwise posted.
White curbs are for loading and unloading mail or passengers.
Loading and unloading passengers
limited time parking
Typically means 'No Parking.'
disabled parking
When parking uphill with a curb, turn your wheels away from the curb and set the parking brake. When parking uphill without a curb, turn your wheels towards the edge of the road or shoulder and use the parking brake. When parking downhill with a curb, turn your wheels towards the curb and use the parking brake. When parking downhill without a curb, turn your wheels towards the edge of the road or shoulder and use the parking brake.
A yellow curb means no parking along that curb.
wheels away from curb
Green Curb Markings indicate no meters and provide for standing or parking no longer than twenty minutes at any time, twenty-four hours a day, every day.
There does not seem to be a fee for parking too close to the curb.
That depends on what color the curb is. White is for passenger loading or unloading only. Yellow is for cargo loading. Red means absolutely no parking. Green is usually for a limited time. Blue is for handicapped parking only. Watch the posted signs when you park.
if you parking uphill you turn your wheel towards the curb and if you parking down hill you turn it away
Green Curb Markings indicate no meters and provide for standing or parking no longer than twenty minutes at any time, twenty-four hours a day, every day.
red curb or a no parking sign