The sign you are referring to, "special vehicles and transport goods free" (sign 1026-33), indicates that the road is free for use by special vehicles, such as vehicles used for public transport, emergency services, or specific types of transport vehicles. This sign generally signifies that these types of vehicles are allowed to proceed without restrictions that might apply to regular traffic, such as a ban on certain vehicle types due to weight limits.

It’s important to always observe and understand the context of the road and any additional regulations that may accompany this sign. Make sure to familiarize yourself with the specific definitions of "special vehicles" and any applicable rules in your area, as these can influence how this sign is enforced.