text: Looking at a Streetside photo taken around the same time this note was created, it looks like the sign in question correctly points toward the left for Centinela and points both ways for Pico:
  https://www.bing.com/maps?cp=34.027475~-118.454878&lvl=17&dir=93.295&style=x&v=2&sV=1
  
  Here's a more recent photo from Mapillary for good measure:
  https://www.mapillary.com/app/?pKey=227002479193434&focus=photo