View all text of Subpart S [§ 86.1801-12 - § 86.1870-12]
§ 86.1840-01 - Special test procedures.
Provisions for special test procedures apply as described in 40 CFR 1065.10 and 1066.10. For example, manufacturers must propose a procedure for EPA's review and advance approval for testing and certifying vehicles equipped with periodically regenerating aftertreatment devices, including sufficient documentation and data for EPA to fully evaluate the request.