In this visualization, we aim to represent the parking domain, including cars and curbs, using geometric shapes, colors, and text labels. The diagram is structured as follows:

1. **Shapes**:
   - **Rectangles**: Represent curbs. Each curb is a medium-sized rectangle, aligned horizontally in a grid format.
   - **Circles**: Represent cars. Each car is a small circle placed within or behind a curb rectangle, depending on its parking status.

2. **Colors**:
   - **Green**: Indicates a "clear" status, meaning the car or curb is free for movement. This applies to clear cars (those that can move) and clear curbs (those that are empty).
   - **Red**: Indicates a "not clear" status, meaning the car or curb is not free for movement. This applies to cars that are not clear (another car is double parked behind them) and curbs that are occupied.

3. **Text Labels**:
   - Each object, whether a car or curb, has a text label inside its shape. The label includes the identifier (e.g., car6, curb_0) and a short status description (e.g., "parked", "double parked", "clear").
   - Text labels are designed to have high contrast against their background colors for readability.

4. **Legend**:
   - A legend is included in the diagram to map colors to statuses, helping users understand the meaning of colors used for cars and curbs.
   - The legend is placed outside the main grid to ensure it does not overlay any objects in the diagram.

5. **Layout**:
   - The curbs are arranged in a horizontal grid, with each curb placed to the right of the previous one.
   - Cars are positioned inside or behind curbs, depending on their parking status (single parked or double parked).
   - Care is taken to avoid overlap between objects and text labels, ensuring clarity and readability.

This visualization approach ensures that the status and relationships between cars and curbs are easily understood at a glance, with clear visual distinctions between different states and entities.