Any curb that is painted yellow usually indicates what?

A curb that is painted yellow typically signifies that parking is restricted and that a proper permit is required to park in that area. This marking serves to notify drivers that while parking may be allowed under certain conditions, it is not freely accessible to everyone. The presence of a yellow curb often indicates that the area may be designated for special uses, such as loading and unloading or for specific vehicles, and therefore enforces the requirement of a permit for compliance. It's important for drivers to recognize these markings to avoid potential fines or towing.