Final answer:
A Special Surplus Line Broker cannot place interstate commerce involving railroads coverage with a non-admitted insurer. Other coverages like aircraft insurance, bridge and tunnel transportation, and navigation perils for import/export goods can usually be placed with non-admitted insurers.
Step-by-step explanation:
A Special Surplus Line Broker is allowed to place coverage with a non-admitted insurer for a variety of risks that the standard market may not want to insure due to their complexity or uniqueness. However, there are exceptions to the types of coverages that can be placed with a non-admitted insurer. Based on the options provided, a Special Surplus Line Broker is not allowed to place interstate commerce involving railroads coverage with a non-admitted insurer. This type of coverage generally requires a licensed insurer due to the heavily regulated nature of railroad transportation and the risks involved. Coverages such as aircraft insurance, transportation involving bridges and tunnels, and insurance against perils of navigation for the import and exporting of goods are typically eligible for Special Surplus Line Brokers to place with non-admitted insurers.