Vehicle Compliance

Source-cited research on vehicle equipment laws, modification rules, and related compliance questions.

Can You Pass Emissions With a Check Engine Light On?

Independent research on OBD-II emissions testing, readiness monitors, permanent DTCs, and state waiver programs.

Where Can I Sell My Catalytic Converter?

Research on the EPA reuse ban, the RCRA scrap metal and precious metals reclamation exemptions, EDXRF assaying, and state anti-theft transaction laws.

Is it illegal to drive barefoot in Pennsylvania?

A state-specific compliance analysis with primary-source citations.