FULL KIT · LIVE
Massachusetts law, in your pocket.
Massachusetts criminal and traffic statutes, the Massachusetts decisions that interpret them, and field guides that walk the call — built from published state sources, on your phone with no signal needed. Covers G.L. c. 265+ and G.L. c. 90.

STATUTE DETAIL IN THE APP
(NEW JERSEY SHOWN — STATE PACKS RENDER THE SAME)
The rules that are Massachusetts’s own.
Federal cases set the minimum. Massachusetts’s courts have their own answers — and those are the ones that control your stop, your search, your report.
Commonwealth v. Feyenord
To hold a car past the traffic purpose you need reasonable suspicion of further crime. A dog sniff of a lawfully stopped car is not a search under art. 14, and here a roughly 25-to-30-minute wait for a canine was upheld as reasonable and proportional — but the longer you hold the motorist, the stronger your articulable suspicion must be.
833 N.E.2d 590FULL BRIEF IN THE MA PACK →
Commonwealth v. Bradshaw
With probable cause for a serious crime, strong reason to believe the suspect is armed and at home, a real escape risk, and impracticability of getting a warrant, a warrantless arrest under exigent circumstances is lawful — and luring the suspect outside by ruse to arrest him there is permissible.
431 N.E.2d 880FULL BRIEF IN THE MA PACK →
Irwin v. Town of Ware
If you encounter an obviously intoxicated driver, take action — arrest, protective custody, or otherwise get them off the road. Massachusetts statutes create a special relationship to protect the public from that driver, and negligently letting them drive on can expose the town to liability.
467 N.E.2d 1292FULL BRIEF IN THE MA PACK →

FIELD GUIDES — STEP-BY-STEP FLOWCHARTS
The call, one decision at a time.
DV, juveniles, hospital holds, use of force, traffic — each guide walks the fork in the road with the Massachusetts law and procedure built in, the way an FTO would talk you through it.
Massachusetts paper plates, decoded.
Run with ‘TP’ prefix
Include ‘TP’ when running the number.
20 days
Valid 20 days, extendable via RMV website.
No security features
Tags have NO physical security features. Rely on running the number.
The temp-tag scanner is free for verified law enforcement — with or without a subscription. SEE HOW THE SCANNER WORKS →
Federal cases that reach every Massachusetts stop.
Pennsylvania v. Mimms (1977)
Ordering the driver out on a lawful stop — what it covers, and what it doesn’t.
Arizona v. Gant (2009)
Once the arrestee is secured, the automatic car search is gone. The two narrow windows that remain.
Riley v. California (2014)
Seizing the phone is one question. Searching its data is another.
Cross the line, keep the reference.
Task force, bi-state agency, or a beat near the border — every state gets the same breakdown, and the FEDERAL KIT travels with you.
NEW HAMPSHIRE → VERMONT → NEW YORK → CONNECTICUT → RHODE ISLAND → ALL STATES →
The Massachusetts kit. Free trial available.
Full Patrol Kit $24.99/yr · Essentials $9.99/yr · Lifetime $69.99 once — SEE PRICING →
Counts reflect the current Massachusetts content pack, are not guaranteed, and change with each content release. DEPARTMENT LICENSING →
