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.

The first weekday of New York City's congestion pricing policy saw lighter-than-expected traffic, but questions remain whether the $9 peak-hour toll is responsible. The MTA estimates the fee could keep 100,

Also today: The problem with Tesla’s Cybercab, and snowplow companies seek alternatives amid erratic winter weather.