Paris subway uses rubber tires so that is not an apple to apples comparison.[1] Did you mean the break squeal[2] or the rail squeal[3]? [1]https://en.wikipedi

Paris subway uses rubber tires so that is not an apple to apples comparison.[1] Did you mean the break squeal[2] or the rail squeal[3]? [1]https://en.wikipedia.org/wiki/Rubber-tyred_metro https://en.wikipedia.org/wiki/Rubber-tyred_metro [2]https://en.wikipedia.org/wiki/Brake_shoe#Railway_tread_brake https://en.wikipedia.org/wiki/Brake_shoe#Railway_tread_brake [3]https://en.wikipedia.org/wiki/Rail_squeal https://en.wikipedia.org/wiki/Rail_squeal