The sign you are referring to is known as "other restrictions" (1053-34). This traffic sign is used to indicate that there are specific prohibitions or restrictions in place for vehicles or certain types of traffic on that road or within that area.

The details of the restrictions are often specified on an additional sign or in the surrounding area. These could include limitations such as weight restrictions for trucks, time-based access restrictions, or specific vehicle type prohibitions (like no access for bicycles, trucks, or certain types of motor vehicles).

It's important for drivers to pay attention to this sign and be aware of the posted restrictions to avoid penalties and ensure safe driving. Always look for the additional signs that can accompany this main sign for precise and relevant information regarding what restrictions apply.