SDOT releases this report annually; so this is the traffic data collected in 2017.

These are some highlights in the annual traffic report from the city's Department of Transportation.

All these numbers are important, given the city's attempts to live up to its climate promises.

Vehicle emissions contribute greatly to the city's carbon footprint, and various mayors have tried to rein in pollution from cars and trucks.

That has seemed an impossibility, given Seattle's rising population and what can seem like non-stop gridlock. But the new numbers indicate that the city is at least not going backward.