99% Invisible

Guerrilla Public Service Redux

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Dec 12, 2017
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ANECDOTE

DIY Highway Sign To Fix Wayfinding

  • Richard Ankrom missed an I-5 exit and later realized the overhead sign lacked the interstate shield.
  • He decided to fabricate an official-looking I-5 North shield and install it himself above the 110 freeway.
ADVICE

Match Official Specs When Modifying Signs

  • Match official specifications when altering public signage to ensure legibility at speed.
  • Study the MUTCD and replicate dimensions, fonts, and colors to blend with existing signs.
ANECDOTE

Dressed As A Worker For Installation

  • Ankrom disguised himself as a Caltrans worker and installed the sign at dawn with friends filming.
  • The installation took under 30 minutes and he left before anyone noticed he'd done it.
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