DOT Lookup uses the Department of Transportation Emergency Responder's Guidebook to provide information about a truck's cargo based on the DOT placard displayed. Simply enter the DOT number into the app, click search, and you will see what substance that number represents! Emergency responders and HazMat personnel will love the simple, easy-to-use search to lookup the DOT number and find the response guide page for a truck's cargo in one single step. Even if that isn't you, have you ever been curious what's in that truck next to you on the highway? Well, DOT Lookup provides and easy way to find out! This app is free and ad-supported. Disclaimer: while reagank software has made an effort to ensure the information contained in this app is correct, it may be out-of-date. You should never base an important decision on this app, but should rather consult the latest version of the DOT ERG!