Driving in Spain there’s loads of road signs where only colour is used to get the message across, such as the red car overtaking the black car here. This sometimes makes the signs difficult to interpret quickly if you’re not used to them and it must be very difficult for colour blind people!
roadsign weirdness in Exeter
Alain Guët - The Portuguese Pedestrian
Bartolomeo Mecanico's Signs of the World
Len Breen - road signs
Wendy Chan - Oman
Jan Koelstra
Stoke Newington Church Street summer festival 1998
Suzanne Vlisser
Wikipedia
Daily Telegraph
Driving in Spain there’s loads of road signs where only colour is used to get the message across, such as the red car overtaking the black car here. This sometimes makes the signs difficult to interpret quickly if you’re not used to them and it must be very difficult for colour blind people!