06/11/2026
When a chassis modification occurs before final upfitting, certification responsibilities can quickly become complex.
NTEA members can access a new technical article from Director of Technical Services Bob Raybuck that examines the compliance obligations of intermediate-stage manufacturers, including:
✔ Incomplete vehicle document (IVD) updates and addendums
✔ Labeling requirements
✔ Wheelbase modification considerations
✔ Impacts on FMVSS compliance and vehicle certification
If your company performs chassis modifications or works with multi-stage vehicle manufacturing, this member-exclusive resource can help you better understand your responsibilities and reduce compliance risk.
Members: Login to access the article at https://www.ntea.com/articles/tech-connections/intermediate-stage-vehicle-certification-labels-and-required