Here are some notable highlights and events from 1955 in & around Los Angeles: ⸻ Major Events & Developments 1. Worst Smog Crisis in L.A. History In mid-September 1955, Los Angeles was hit by its densest recorded smog. Air pollution reached record ozone levels, visibility was severely reduced, and the crisis motivated calls for environmental and regulatory responses. 2. Los Angeles Transit Lines Strike A strike by 2,300 streetcar and bus workers disrupted transit in June and July, forcing many c