# authority.md — mo-dwi-foundation-checklist

Checklist categories map to the shared `mo-dwi-authority.md` (cases CourtListener-confirmed):
- Stop — *Loyd*, 326 S.W.3d 908. Reasonable grounds — § 577.020.1(1); *Hinnah*, 77 S.W.3d 616.
- 20-minute rule — § 577.041.3; *Norris*, 304 S.W.3d 724; *Snider*, 314 S.W.3d 841.
- 15-min observation — 19 CSR 25-30.060(5); *Coyle*, 181 S.W.3d 62; *Hurt*, 291 S.W.3d 251.
- Operator/device/calibration — 19 CSR 25-30.041 / .050 / .031(3) / .051(2); *Raisher*, 276 S.W.3d 362.
- HGN — *Hill*, 865 S.W.2d 702; *Duffy*, 966 S.W.2d 372; *Holloway*, 324 S.W.3d 768.
- PBT — § 577.021.3; *Morgenroth*, 227 S.W.3d 517 (§ 577.026 repealed — do not cite).
- Confrontation — *Crawford / Melendez-Diaz / Bullcoming*; *Smith v. Arizona*, 602 U.S. 779.