Have I ever mentioned how much I hate the cabs in Chicago?

Any way, the Chicago cabbies use their horns a lot. If the traffic is not moving fast enough for them, they beep. If pedestrians are in the crosswalk after the light turns red, they beep. You get the idea. I have noticed that about half of the cabs have horns that sound very weak and tinny. My question is: have their horns just worn out with so much use, or in an attempt to not have Chicagoans totally despise their cabs, have the owners of the companies somehow turned down the volume on the horns or installed weaker ones?