The sign name is "multilane vehicles free" (1024-17). This traffic sign indicates that certain types of vehicles are prohibited from using the multilane road. Specifically, it generally applies to vehicles that are not allowed to use multi-lane roads, such as certain types of cyclists or other non-motorized vehicles.

This sign is primarily used to ensure that roads designed for higher speeds and multiple lanes are kept clear of slower-moving vehicles that could cause traffic delays or hazards. It is important for drivers to be aware of the specific regulations related to this sign in the area they are driving in, as local rules may vary.

If you have any further questions about this sign or any other traffic rules, feel free to ask!