• Air Toxics
• CMAQ
• Conformity
• It All Adds Up

• Laws and Regulations
• Maps
• Policy and Guidance
• Research
• Resources
• Models & Methodologies
• Training

This guide was updated in February 2017.

Transportation Conformity: A Basic Guide for State and Local Officials

Contents

• Executive Summary
• Purpose Of This Guide
• Introduction
• Transportation Conformity And Actions Subject To Conformity
• Description Of A Conformity Determination
• Responsibility For Making A Conformity Determination
• Frequency Requirements For Transportation Conformity
• Key Elements Of A Metropolitan Transportation Plan/ Tip Conformity Determination
  • Interagency Consultation
  • Public Involvement
  • Latest Planning Assumptions And Emissions Model
  • Regional Emissions Analysis
    • Motor Vehicle Emissions Budget
  • Timely Implementation Of Transportation Control Measures (tcms)
  • Fiscal Constraint
• Project-level Conformity And Hot-spot Analysis
• Conformity Lapse And Lapse Grace Period
• Options For MPOs To Reduce Emissions
• Appendix A: Health Effects Of Pollutants
• Appendix B: Options To Reduce Emissions From On-road Motor Vehicles
• Appendix C: Resource Agencies And Other Helpful Contacts
• Glossary