File:MUTCD R2-1.svgMUTCD R2-1 speed limit sign Source: Page Page 5B-2, Manual on Uniform Traffic Control Devices for Streets and Highways - 2003 Edition English Speed Limit
File:MUTCD R2-1 METRIC.svgMUTCD R2-1 speed limit sign, metric option Source: Page Page 5B-2, Manual on Uniform Traffic Control Devices for Streets and Highways - 2003 Edition English
File:MUTCD-PR R2-6a.svgEnglish sign R2-6a “End Speed Zone” from the Puerto Rico MUTCD supplement, with text converted to paths Spanish rótulo R2-6a “Termina zona de velocidad”
File:MUTCD-PR R2-4a.svgEnglish sign R2-4a “Combined Speed Limit” from the Puerto Rico MUTCD supplement, with text converted to paths Spanish rótulo R2-4a “Velocidad máxima combinada”