Final answer:
Customer loyalty is not considered an operational factor of modal selection in logistics, as it does not pertain to the physical logistics constraints of shipment size, weight, delivery speed, or special handling.
Step-by-step explanation:
Among the operational factors of modal selection in logistics and supply chain management, customer characteristics play a crucial role. These characteristics typically include factors directly related to the delivery and handling of goods, such as shipment size and weight, delivery speed requirements, and special handling requirements. These elements are critical in determining the most appropriate transportation mode to meet customer needs. However, the listed options include something that is not usually considered a direct operational factor: customer loyalty. Customer loyalty is a reflection of the customer's preference for or satisfaction with a service provider, but it does not inherently impact the physical logistics constraints of shipment size, weight, delivery speed, or special handling.