New York’s congestion pricing started, charging a base toll of $9— motorcyclists get a break —for any non-taxi passenger cars entering Manhattan south of 60th Street. Even before then, though, the official Tolls by Mail New York website posted a warning that it’s aware of a text message scam that attempts to collect personal information by threatening late fees on unpaid congestion tolls.

The MTA says it will not charge any fines or fees besides the toll price for 60 days. Watch out for phishing scams.

The toll, known as congestion pricing, is meant to reduce traffic gridlock in densely packed Manhattan while also raising money to help fix the city’s ailing public transit infrastructure. It formally took effect Sunday.