Travel Rules
5 topics · 168 cited cells · seed review Aug 2026
Rules you can check before you drive
Five rule checkers cover the questions that change at state lines: child seats, speed, tolls, winter traction and pets. This is a seed review — 168 cited cells across the topics below, each stamped as of Aug 2026, each carrying its own citation. Seed review — full 51-jurisdiction capture with statute-level citations ships with the rules data build.
The five topics
Car seat laws
Rear-facing, booster, penalty, enforcement and front-seat rows for ten states.
10 states · open the car seat laws index
Speed limits
Rural and urban interstates, divided and undivided highways, and truck differentials where standard.
15 states · open the speed limits index
Toll transponders
The interop matrix: which pass works where, across nine systems.
9 systems · open the toll transponders index
Chain laws
Winter traction levels, device definitions and DOT check links for six mountain states.
6 states · open the chain laws index
Pet travel rules
Restraint, truck-bed and hot-car rows, with absence findings stated honestly.
5 states · open the pet travel rules index
How to read these pages
Every rule row shows its citation, the date we retrieved it, and a confidence level. In this seed every row is medium confidence, which renders the same advice: confirm current requirements with the state authority. Information only, not legal advice. Laws change. Verify current requirements with the state authority. The machine-readable matrix lives at /data/rules/rules.json.