Final answer:
A parking sign with an arrow indicates the direction where parking is permitted, either to the left or right of where the sign is posted, and may include additional restrictions.
Step-by-step explanation:
A parking sign with an arrow usually indicates the direction in which parking is allowed. If the arrow points to the right, parking is permitted in the direction the arrow indicates from the sign onward. This could mean that parking is allowed on the side of the road where the sign is posted. Similarly, if an arrow on a parking sign points to the left, parking is permitted on that side of the street. The presence of an arrow on such a sign typically limits or extends parking to the area in the direction it points. It's important to note the specifics of any additional text or symbols on the sign as well, which may impose time limits or other restrictions.