Before revision: Tokyo's narrow streets force automobiles and pedestrians to be close to one another; a common traffic calming technique in Tokyo is to change the surface material and/or texture of the shoulder of narrow roads, which helps define the boundary between cars and pedestrians, while allowing cars to use those spaces to pass oncoming traffic .
After revision: Tokyo's narrow streets force automobiles and pedestrians to be close to one another; a common traffic calming technique in Tokyo is to change the surface material and/or texture of the shoulder of narrow roads, which helps define the boundary between cars and pedestrians, while allowing cars to use the shoulder to pass each other after yielding to pedestrians .