In **areas reserved for people with disabilities**, neither stopping nor parking is allowed. This is because these areas are specifically designated to facilitate access for people with reduced mobility, and any vehicle not authorized to use these areas would obstruct their proper use.

- **Stopping and parking** in these areas is prohibited, just like in other reserved zones, such as those designated for buses, taxis, or bicycles.
- The regulations clearly state that these areas must remain free for the exclusive use of authorized vehicles, thus ensuring that people with reduced mobility can easily access the places they need.

Therefore, the correct answer is that **stopping or parking is not allowed** in these areas.