font
https://en.wikipedia.org/wiki/Highway_Gothic
https://en.wikipedia.org/wiki/Transport_(typeface)
https://www.roads.org.uk/fonts
https://www.1001fonts.com/road-signs-fonts.html
https://typography.guru/journal/traffic-sign-typefaces-din-1451-germany-r33/
https://en.wikipedia.org/wiki/Speed_limit
www.dafont.com/roadway.font
List of public signage typefaces
google photos
depositphotos_122218130-stock-photo-korean-traffic-sign-safe-speed
vector - deposit photos
https://jp.depositphotos.com/vector-images/最小限.html
Collection of Traffic Road Signs
http://clipart-library.com/traffic-road-signs.html
http://clipart-library.com/clipart/rTjR7MyTR.htm
http://clipart-library.com/clipart/Biarpr7bT.htm
funny warning signs
https://in.pinterest.com/search/pins/?q=trafic%20Signs%20Take%20funny
road signs icons
