What service do most container shipping lines provide for shipments?

The correct answer is the service that most container shipping lines provide with a single-carrier intermodal bill of lading. This type of bill of lading is advantageous because it functions as a contract for the transportation of goods and assigns liability to a single carrier throughout the entire shipping journey.

Using a single-carrier intermodal bill simplifies the process for the shipper since it allows for a streamlined approach to tracking and managing the transport of goods across different modalities—such as land and sea—under the responsibility of one company. This reduces the complexity of dealing with multiple carriers, making it easier to resolve any issues that may arise during transit.

The other options involve varying degrees of complexity or do not align with the practices of most container shipping lines. A multi-carrier intermodal bill of lading would involve multiple carriers and could complicate liability matters. A segregated carrier service suggests a separation of carriers for different legs of the journey, which again adds complexity. A single route bill of lading unfortunately limits flexibility, as it does not account for the varied routes that container shipping might take based on logistics, demand, or operational factors.