Файл:MUTCD M1-1 (2 digits).svgMUTCD M1-1 Interstate Route sign (two digit) Source: Page Page 2D-5, Manual on Uniform Traffic Control Devices for Streets and Highways - 2003 Edition
Файл:MUTCD M1-4 (2 digits).svgMUTCD M1-4 US route sign (two digit) Source: Page Page 2D-5, Manual on Uniform Traffic Control Devices for Streets and Highways - 2003 Edition U.S. Route
Файл:MUTCD M1-2.svgMUTCD M1-2 Off-Interstate Business Route sign (two digit) Source: Page Page 2D-5, Manual on Uniform Traffic Control Devices for Streets and Highways -
Файл:I-395 (long).svg[http://mutcd.fhwa.dot.gov/SHSm/Guide.pdf 2004 edition of Standard Highway Signs] (sign M1-1). Uses the [http://www.triskele File:I-390_(long).svg licensed