Loaders have been designed with the purpose of making operations involving loading materials more efficient. The bucket-mounted on the front of loaders is used by operators to scoop up material from the work site, lift it out of a bin or truck and place it on a flat surface for transport. Depending on the type of surface being worked upon, loaders can be designed with wheels (for high-speed and fast-transporting capabilities when working on paved surfaces) or tracks (for increased traction on soft and uneven surfaces).
Loaders used in today's work environments are powered either by a diesel engine or an electric power source, which allows for superior power and performance. Additionally, hydraulic systems installed on loaders allow the operator to perform precise, controlled movements when operating the machine; the hydraulic system provides the loader's operator with smooth and uninterrupted operation of the machine and components, which can lead to reduced stress-related injuries to operators working long hours. Many loaders are equipped with a "quick attach" option, allowing operators to change attachments quickly without needing tools or additional personnel.