Membership Options

Gain unrestricted access to all Big Truck Guide tools, calculators, documents and more! Become a Big Truck Guide member and gain access unlimited access to the MyBigTruck application, numerous tools to explore weight regulations and documents like our eTextbook and Cheat Sheets.

Kingpin to Tandems Cheat Sheet

Everything that you need to know about Kingpin to Tandem Axle Measures in 4 pages, including a printable copy of the Kingpin to Tandem Axles Maximums table, map, and instructions on how and when to move your axles.

Understanding Truck Weights and Dimensions

Trucking regulations are complicated, and the cost of operating a truck not in compliance is high for both truck drivers and trucking companies. This book is meant to help in training classes, orientation classes, and for general reference by drivers on the road. It is accompanied by a series of 4 quizzes that test the knowledge of the student so they can fully understand the complicated world of trucking regulations.

Working through the four chapters gives an overview of trucking regulations in the United States and Canada. The first chapter explains the concepts of gross weight, tare weight, tire weights, axle weights and manufacturers’ weights. The following two chapters explain the US Federal regulations, and importantly, where these regulations apply and where they do not. The final chapter concentrates on a topic that is confusing and that many drivers find difficult, the distance that a set of tandem axles on a standard 5 axle truck can be from the kingpin of the trailer.


It’s like downloading your safety manager’s brain! The MyBigTruck report will show you exactly the gross and axle weight maximums are for your truck. Jurisdictions where the combination does not fulfill the Kingpin to Rear Axle restriction, or the trailer length restriction, are crossed out in red so you can easily see where you can’t go!