G5- Currently streets in Santiago have bike lanes of various colours, including blue, yellow, red, white and green.
G5- "red was consistently related to higher scores of the outcome variables, yellow and blue produced similar effect as well, but slightly lower. White was the weakest colour, except when the intersection was partially painted—like a chess board."
They added multipe colors to roads and they all saw good resluts other than white because people are used to seeing white.