In my experience, many veteran taxi drivers simply take (sometimes longer or more congested) routes, just because they are used to them and <i>think</i> they are better. In some cases, I&#x27;ve noticed the difference of a fare as much as 30%. I always have a hard time explaining them that other route is shorter, because they <i>know</i> better (than me or GPS). For this reason, I now first call taxi firms that use GPS on all cars.