The sign "special vehicles and transport goods free" (sign 1026-37) indicates that the route ahead is open for special vehicles and the transport of goods, allowing them unrestricted access. This sign is typically used in areas where certain vehicles, such as trucks or specific service vehicles, have special permissions to enter without restrictions, often in locations where general traffic might be restricted or prohibited.

In practical terms, if you see this sign, it means that vehicles that fit the criteria of being "special" or those that are transporting goods can legally use this route, even if there are limitations for other types of vehicles. Always pay attention to any accompanying signs that may provide further details regarding the type of vehicles allowed.