File:MUTCD W10-1.svg - Wikipedia
File:MUTCD-PR R5-10a.svg - Wikimedia Commons
File:MUTCD R9-3b.svg - Wikimedia Commons
File:CA-ON Road Sign Ra-010 Wikimedia Commons, 59% OFF
High res images of US road signs..I love these. : r/Design
File:MUTCD R9-2.svg - Wikipedia
File:MUTCD-OH R3-H16.svg - Wikimedia Commons
File:MUTCD R9-5.svg - Wikimedia Commons
File:MUTCD R9-6.svg - Wikipedia