No — this was built by a student who took the airbrake CDL class for a local transit company, as a personal study tool. It's not affiliated with any DMV, testing agency, or transit company.
No. The Setup section is completely free, no account needed. You can also drag any other section into order for free — you only need to sign in to press Check order outside of Setup.
Once you're signed in, you get one free order-check per section. A one-time $5 payment unlocks unlimited checking in every section, forever — it's not a subscription.
Use the Sign in button in the top right — with an email and password, or with Google. If you don't have an account yet, there's a link to create one right in that form.
Check your spam folder first. If it's still not there after a few minutes, wait a bit and try again — email delivery can occasionally be delayed.
Yes — it works in any modern mobile or desktop browser, including the drag-and-drop reordering.
Use the Contact us link at the bottom of the page. Corrections and suggestions are welcome.