; and (C) any single unit truck— (i) the bottom of the carriage of which is greater than 22 inches above the ground; (ii) with a gross vehicle weight rating of 10,000 pounds or more; and (iii) that is manufactured before the effective date of the rule under paragraph (1). (3) Performance standards A rear underride guard shall be considered to meet the performance standard referred to in paragraphs (1) and (2) if the rear underride guard is able to prevent intrusion from the body or frame of a vehicle described in paragraph (1) or (2), as applicable, into the passenger compartment of a passenger motor vehicle that contacts the guard while traveling at 35 miles per hour, as verified through crash testing while attached to a trailer, after— (A) an impact in which the passenger vehicle impacts the center of the rear of the trailer, semi-trailer, or single unit truck; (B) an impact in which 50 percent the width of the passenger vehicle overlaps the rear of the trailer, semi-trailer, or single unit truck; and (C) an impact in which 30 percent of the width of the passenger vehicle overlaps the rear of the trailer, semi-trailer, or single unit truck. (4) Compliance dates (A) In general Except as provided in subparagraph (B), compliance with each of the rules issued by the Secretary under paragraphs (1) and (2) shall be required beginning 1 year after the date on which the final rule is published in the Federal Register. (B) Phase-in The Secretary may permit a phase-in period (not to exceed 2 years) for the installation of rear underride guards on trailers, semi-trailers, and single unit trucks described in paragraph (2). (b) Side underride guards (1) In general Not later than 1 year after the date of enactment of this section, the Secretary shall issue a final rule requiring the installation of side underride guards that meet the performance standards described in paragraph (3) on— (A) any trailer with a gross vehicle weight rating of 10,000 pounds or more that is manufactured on or after the effective date of the rule