The oversized load reference book is an excellent source of information for any driver that finds themselves driving OSL across America.  This book provides quick access to rules and regulations on running times, permitted speed limits, sunrise/sunset tables, axle weights, minimu for excorts, conversion tables, railroad crossings and more.  Quick access to permit offices and detailed descriptions of load sizes for each State.

The OSL Reference Book is updated regularly.  Our 2025 version is the most current.  Sold individually.