The autostrada bills by distance, take a ticket on entry and pay on exit — never queue in a yellow Telepass-only lane without a transponder. The real trap is the historic centre of almost every old city: a camera-enforced ZTL that fines rental cars months after the trip.
Telepass lanes have no barrier for cash/card payers and no way to back out safely once committed.
Camera-enforced, not gated — you can drive straight in without realizing, and the fine (plus a roughly €50 admin fee from a rental company) arrives by post months later.
Ask before you arrive, not after driving in.
The "Safety Tutor" system on many autostrada sections averages your speed between two cameras, not just a single point.