The Archives 

Federal Motor Carrier Safety Administration (FMCSA)
Driver's Handbook on Cargo Securement

A Guide to the North American Cargo Securement Standard

This handbook is a federal requirement.

Handbook required to be carried in all cargo trucks in US and Canada.

Illustrations became part of the federal guidelines and are reused to create state level and private training materials, and are found on Wikipedia as Public Domain

A search for them online turns up many examples of educational reuse at the state and local level.

I needed them to be easily associated with measurements so I edited a base model in 3D Studio Max and exported to vector. Then, edited in Adobe Illustrator and flowed into Adobe InDesign print layouts.