Are SMV signs prohibited on fixed objects?
The SMV sign is for vehicles only. The use of a SMV sign on a fixed object, such as a roadside mailbox or as a driveway marker, is prohibited if it can be seen from the road. Signs attached to mailboxes or posts must be removed. Property owners or tenants displaying SMV signs on fixed objects may be subject to a fine. Municipalities can still post caution signs to warn motorists that slow moving vehicles often travel on their roads.