What they needed
A partnership between the New York State Energy Research and Development Authority (NYSERDA) and nonprofit Emissions Advantage (EA). The CDCH is a web based tool that helps vehicle manufacturers / owners find the correct retrofit technology to reduce emissions from older diesel engines and provides information for the general public about emissions guidelines.
We decided to use Ruby in Rails as our framework for this project since this is predominantly a workflow management tool. Form builders with conditional fields allow users to find the specific info they need for their vehicle. Users with accounts can document BAT compliance for a specific vehicle type.