This legislation updates the Seattle Municipal Code to streamline permitting processes for the construction of light rail transit facilities. It introduces new development standards for light rail, establishes an advisory review process by the Seattle Design Commission for design proposals, and clarifies permit processes for efficiency. The amendments aim to reduce review rounds and allow permit decisions to focus on design and access, including exemptions from certain development standards. The changes are intended to support the timely construction of the West Seattle Link Extension and Ballard Link Extension projects, which include 14 light rail stations and 12 miles of track.