What is the typical weight characteristic of the polyethylene used in life lines?

The typical weight characteristic of polyethylene used in life lines is considered to be light. Polyethylene is a lightweight thermoplastic that is commonly utilized in various applications, including safety equipment like life lines. This lightweight property is particularly beneficial for life lines, as it allows for easy handling and maneuverability while ensuring that the lines provide adequate strength and durability. The lighter weight reduces the overall burden on the user or equipment it supports, making it easier to deploy in emergency situations and enhancing safety measures without being cumbersome.

In contrast, other weight classifications such as heavy, medium, or very heavy would imply that the material is cumbersome and less practical for use in life lines, which is contrary to the intended functionality of such safety equipment. Therefore, the characteristic of being light aptly describes the polyethylene used in these critical applications.