Which principle of materiel handling requires consideration of legal and physical restrictions concerning transportation?

The principle of materiel handling that requires consideration of legal and physical restrictions concerning transportation is advanced planning. This principle emphasizes the importance of identifying and accounting for various factors that could impact the movement and transport of materials. By considering applicable regulations, such as weight limits, hazardous material laws, and local transit authorities' restrictions, organizations can ensure compliance and effectiveness in their operations.

Advanced planning involves a thorough assessment of the potential challenges that could arise during transportation, including logistical complications and regulatory requirements. This proactive approach helps to mitigate risks and optimize the shipping process by ensuring that all legal obligations and physical conditions are addressed before moving cargo, thereby enhancing safety and efficiency in materiel management.

In contrast, the other principles focus on different aspects of handling materials. Use straight line flow emphasizes efficiency in movement to minimize delays, least handling is the best handling suggests reducing the number of times a product is moved to save time and reduce damage, and volume dictates the method of handling relates to how the quantity of items influences the selection of handling equipment and techniques. These principles, while essential in their contexts, do not specifically address the critical need to factor in transportation-related legal and physical constraints.