Final answer:
A green curb indicates short-term parking with time limits, while other colors like red and white indicate other types of parking restrictions or allowances.
Step-by-step explanation:
When a curb is painted green, it indicates that drivers may park in the indicated area for only a specified amount of time. Curbs painted in different colors convey different parking rules or restrictions. For instance, a red curb typically signifies no stopping, standing, or parking, while a white curb often means that a vehicle can stop there for a brief period to pick up or drop off passengers or mail. The green curb, on the other hand, is used for short-term parking, with the specific time limits usually indicated by a nearby sign.