one of the most memorable was new year's eve 2013 when 6-year-old sophia liu was killed at polk and ellis. the municipal transportation agency has a plan to make a 20-block stretch of the street safer. >> we've come up with a plan that involves protecting pedestrians through new design of sidewalks and crosswalks, protecting cyclists with a raised cycle track as well as bike lanes as well as improving traffic circulation by changing signals and design of the roadways. >> reporter: why is there opposition secret that for merchants like this owner of smoke signals magazine show, the loss of parking is huge. 110 spots along polk will be eliminated. >> people come from marin, from the valley, from everywhere to shop here. if they -- if it's not convenient, they condition find parking, and they won't bother. royal the bicycle coalition likes half the plan. the part that runs between pine and mcallister through the tenderloin has a raised bike path and dedicated lanes. the portion stretching north to union street has lanes shared with cars and a few blocks of bike-only lanes just during the mor