The City of Sacramento’s Climate Action and Adaptation Plan (CAAP), preliminary draft, includes the graphic below, showing emissions by sector for the city.
Transportation is 57% of emissions (2016), and is likely higher now because other sectors are being reduced but transportation is expanding. One might assume that 57% of the document would be devoted to this primary source. But Chapter 6, GHG-Reduction Measures and Actions, devotes 15 pages to built environment, 14 pages to transportation, and 13 pages to other sectors (waste, water and wastewater, carbon sequestration). Transportation is the second sector to be addressed, after built environment, which I think represents that the city sees transportation as less important than built environment.
Getting Around Sacramento 
These posts have been super helpful – thank you.