In order to help transportation agencies better understand TPM federal regulations and requirements, USDOT and FHWA have created the video series, "TPM Essentials." The series comprises 18 short clips; each focuses on a specific aspect of federal TPM. The entire series can be found on FHWA's website here or on Youtube here.

This video explains applicability determination for traffic congestion for transportation agencies. These federally regulated measures are related to the Congestion Mitigation and Air Quality Improvement (CMAQ) Program under the federal TPM system performance rule: PM3. The video answers the following three questions with regard to this topic:

• How is applicability determined?
• What actions are required
• How does it fit with the TPM timeline?