{"data":{"id":"us/40-cfr-1036.555","jurisdiction":"us","citation":"40 CFR 1036.555","heading":"Test procedures to verify deterioration factors.","body":"Sections 1036.240 through 1036.246 describe certification procedures to determine, verify, and apply deterioration factors. This section describes the measurement procedures for verifying deterioration factors using PEMS with in-use vehicles.\n(a) Use PEMS to collect 1 Hz data throughout a shift-day of driving. Collect all the data elements needed to determine brake-specific emissions. Calculate emission results using moving average windows as described in § 1036.530.\n(b) Collect data as needed to perform the calculations specified in paragraph (a) of this section and to submit the test report specified in § 1036.246(d).","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1036—CONTROL OF EMISSIONS FROM NEW AND IN-USE HEAVY-DUTY HIGHWAY ENGINES","Subpart F—Test Procedures"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"ce52e7cdd3c0532ec705e7024ebb58298989704e98a36c7df29e6f381d8a6ef0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1036.550","next":"us/40-cfr-1036.580"},"notice":"GroundRules: Original legal text. Not legal advice."}