Contact CDL Prep

Contact CDL Prep Support

Published by on 2023-09-02

About: CDL Prep is the best way to prepare for the Commercial Drivers License General
Knowledge, and various endorsement exams. CDL Prep contains questions on the
following topics: General Commercial, Air Brakes, Combinations, Hazmat,
Passenger, Tanks, School Bus, and Doubles/Triples.



How to Contact CDL Prep Customer Service/Support

CDL Prep Contact Information

Listed below are our top recommendations on how to get in contact with CDL Prep. We make eduacted guesses on the direct pages on their website to visit to get help with issues/problems like using their site/app, billings, pricing, usage, integrations and other issues. You can try any of the methods below to contact CDL Prep. Discover which options are the fastest to get your customer service issues resolved..
The following contact options are available: Pricing Information, Support, General Help, and Press Information/New Coverage (to guage reputation).



Verified email  

Contact e-Mail: [email protected]


100% Contact Match

Developer: Jeffrey Diaz

E-Mail: [email protected]

Website: Visit CDL Prep Website








Reported Issues: 3 Comments

4.7 out of 5

By Irritable.


The App would be perfect if we could report wrong questions

I used this app to pass everything except passenger and HME (because I haven’t taken them yet). I’m currently studying my hazmat and I noticed a question I got wrong and I didn’t think I was wrong. So I went and read the section of the manual (which I have printed out, highlighted and noted to heck and back) and sure enough the app was wrong. This wouldn’t be such a big deal if we had a way to report it. And on the other endorsements it’s not as much of a problem. But the hazmat test is difficult enough on its own. We don’t need to be fed wrong answers. Without a way to report these incorrect answers to the dev, this app is a one star for me.



By Upset over $


At least one of the questions is inaccurate

The question that says: You are unloading students along your route. Where should students walk to after exiting the bus? The correct answer is: ‘Tell Students to exit the bus and walk at least 10 feet away from the bus to a position where the driver can plainly see all students.’ Taken from section 10.2.3 from the VA DMV CDL manual. Your app states that 15 feet is the correct answer and says it’s in 10.2.5 which is incorrect. I would’ve suggested this edit in the app if I were given the option to do so. Please edit to give the correct answer.



By Luke1904


Needs updating

There are several questions on the exam that are not on this app. I would estimate this app has about 85% of the questions I encountered on the test. I was able to pass GENERAL KNOWLEDGE and AIR BRAKES with the knowledge I gained from this app but I still had to guess on several questions because they were not on this app. COMBINATIONS really needs attention, it had more questions that were not on the app like “how to tell if your trailer is skidding and which combination is more likely to roll over during a curve. I studied this app religiously and my failing was 100% due to questions not being on the test. I’m not sure if the test differ from state to state but I live in Florida if that helps the developers.




Have a Problem with CDL Prep? Report Issue

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Why should I report an Issue with CDL Prep?

  1. Pulling issues faced by users like you is a good way to draw attention of CDL Prep to your problem using the strength of crowds. We have over 1,000,000 users and companies will listen to us.
  2. We have developed a system that will try to get in touch with a company once an issue is reported and with lots of issues reported, companies will definitely listen.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
  4. If you are a CDL Prep customer and are running into a problem, Justuseapp might not be the fastest and most effective way for you to solve the problem but at least you can warn others off using CDL Prep.


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