The City of Sacramento is working on a Transportation Development Impact Fee (TDIF) for the entire city, and with somewhat different requirements for subareas including downtown, river district, and North Natomas. The Sacramento Bee clued me into the proposal with Sacramento asks developers to open wallets to keep city streets from clogging (SacBee 2016-12-08). My initial guess was that this is in response to the failure of Measure B, but this proposal has been worked on since at least August, so that is not the case. The city has a webpage on development impact fees, with two documents specifically about the transportation DIF. I have not had the time to delve into the details, nor do I have any expertise in this area, so these are my initial thoughts.