What is the primary purpose of using a coil stopper during transport?

The primary purpose of using a coil stopper during transport is to secure the coils in place and prevent rolling. Coils, particularly those made of metal, can be heavy and may have a tendency to shift during transit. If they roll or move, this can lead to instability not just for the coils themselves but also for the vehicle carrying them, potentially causing accidents or damage. By utilizing coil stoppers, which are designed specifically for this purpose, the integrity of the load is maintained, ensuring safe transport. This stabilization is critical in maintaining balance and ensuring that the coils arrive at their destination securely and without incident.

The other options do not accurately reflect the function of a coil stopper. Enhancing vehicle speed or making the load lighter are not relevant to the design or utility of a coil stopper, while simplifying the unloading process might be a secondary benefit but is not the primary function during transport. The main focus remains on securing the coils to prevent any movement or rolling, which can lead to various safety hazards.