part_subject: "CONTROL OF EMISSIONS FROM NEW HEAVY-DUTY MOTOR VEHICLES"
subpart_code: "C"
subpart_subject: "Certifying Vehicle Families"
section_number: "1037.211"
section_subject: "Preliminary approval for manufacturers of aerodynamic devices."
cfr_reference: "40 CFR 1037.211"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 1000 to 1059"
revised_date: "Revised as of July 1, 2017"
publication_date: "As of July 1, 2017"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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(a)If you design or manufacture aerodynamic devices for trailers, you may ask us to provide preliminary approval for the measured performance of your devices. While decisions made under this section are considered to be preliminary approval, we will not reverse a decision where we have given you preliminary approval, unless we find new information supporting a different decision. For example, where we measure the performance of your device after giving you preliminary approval and its measured performance is less than your data indicated, we may rescind the preliminary approval of your test results.
(b)To request this, you must provide test data for ΔC
d
A values as specified in § 1037.150(u) or § 1037.526. Trailer manufacturers may use approved ΔC
d
A values as inputs under § 1037.515 to support their application for certification.