Police Field Guide USA

Police Field Guide USA is a fast, fully offline reference for US law-enforcement officers, deputies, troopers, recruits and criminal-justice students — built entirely from public-domain, official sources. WHAT'S INSIDE • Law — Fourth, Fifth, Sixth & Fourteenth Amendment doctrine from 65 landmark US Supreme Court cases, with the verbatim key quote and a link to the opinion. Use of force (Graham/Garner), arrest & detention, Terry stops, traffic-stop doctrine. • Offenses — federal offenses (Titles 18 & 21), Controlled Substances Act schedules, general majority-rule elements for common crimes, plus your state's penal-code overlay. • Traffic / DUI — BAC legal limits, implied consent, the SFST battery (HGN/WAT/OLS) and the 12-step DRE process from NHTSA material, plus your state's DUI limits. • Your state — pick from all 50 states + DC: penal & vehicle code links, DUI limits, use-of-force statute, stop-and-identify status, carry laws, statute of limitations, cannabis status and key offenses (top-10 states fully built out; more added over time). • Tools & Fabula — a narrative constructor, Miranda card, warrant-exception guide, Terry-vs-arrest analyzer, vehicle-search wizard, 48-hour clock, skid-to-speed and statute-of-limitations calculators, field-interview and description builders, case flashcards and tickable checklists. • Practice — 400+ POST-style practice questions across six categories, each with an explanation and a source reference. WHY IT'S DIFFERENT • 100% offline — everything works with no signal and no account. • Sourced — every fact is drawn from official public-domain law (US Supreme Court & federal opinions, the US Code, the CFR, NHTSA; and states' enacted statutes and opinions). We quote public-domain text directly and write offense elements in our own words. • Private — no ads, no tracking, no accounts, no in-app purchases.