A yellow curb indicates which of the following?

A yellow curb is specifically designated for loading and unloading passengers or freight only. This means that vehicles can stop at a yellow curb temporarily to facilitate the pick-up or drop-off of goods and people, but they are not allowed to park there for extended periods. The regulation aims to ensure that curb space is available for active loading and unloading activities, which are essential in busy areas where space is limited.

The primary focus of a yellow curb is to prevent congestion and to keep traffic flowing smoothly by allowing brief stops without the expectation that vehicles will be left unattended. It's important for drivers to understand this rule to avoid penalties, as parking at a yellow curb for longer than permitted can lead to fines or towing. Other curb colors are designated for different purposes, such as red for no parking and green for limited time parking, which helps further organize public roadway usage based on specific needs.