40 CFR §1051.101

1. (a)You must show that your vehicles meet the following:
   1. (1)The applicable exhaust emission standards in § 1051.103, § 1051.105, § 1051.107, or § 1051.145.
      1. (i)For snowmobiles, see § 1051.103.
      2. (ii)For off-highway motorcycles, see § 1051.105.
      3. (iii)For all-terrain vehicles and offroad utility vehicles subject to this part, see § 1051.107 and § 1051.145.
   2. (2)The evaporative emission standards in § 1051.110.
   3. (3)All the requirements in § 1051.115.
2. (b)The certification regulations in subpart C of this part describe how you make this showing.
3. (c)These standards and requirements apply to all testing, including certification, production-line, and in-use testing.
4. (d)Other sections in this subpart describe other requirements for manufacturers such as labeling or warranty requirements.
5. (e)It is important that you read § 1051.145 to determine if there are other interim requirements or interim compliance options that apply for a limited time.
6. (f)As described in § 1051.1(a)(4), offroad utility vehicles that are subject to this part are subject to the same requirements as ATVs.