In the diagram, each curb is represented by a rectangle, signifying a parking space where cars can be parked. The rectangles are arranged horizontally to represent the sequence of curbs from left to right. Each curb's rectangle is labeled with its identifier (e.g., curb_0) for easy reference.

Cars are depicted as circles within or behind the rectangles, indicating whether they are parked or double parked. The position of the circle within the rectangle (or slightly behind another circle) indicates the car's parking status. Each car is labeled with its identifier (e.g., car6) for identification.

The color of each circle represents the car's status. A green circle indicates the car is "clear," meaning it can move because no other car is double parked behind it. A red circle signifies "not clear," indicating the car cannot move due to another car being double parked behind it.

A legend is included to map colors to statuses, ensuring clarity in understanding the diagram. The legend is placed in a location that does not overlap with any diagram objects to maintain readability.

The size of the rectangles and circles is chosen to ensure no overlap and clear visibility of labels and statuses. Text labels and statuses are placed inside their respective shapes with high contrast against the background to enhance readability.