Interlock Technical Development and Consulting Corporation and Intertrain Incorporated are brother companies whose main focus is on the student transportation industry. Our products are diverse within this sector, encompassing software and safety programs. With over 12 years of experience in developing unique solutions to complex challenges we are able to apply our highly effective tools with great success. Choose from the product list above to understand some of what we do and how we do it. Contact us for an in-depth discussion.