And "The Knowledge" doesn't provide the ability for taxi drivers to psychopathically become aware of delays in traffic on a given road. I've never noticed any p

And "The Knowledge" doesn't provide the ability for taxi drivers to psychopathically become aware of delays in traffic on a given road. I've never noticed any particular difference in the amount of time I've been stuck in traffic when travelling in black cabs or in taxis with drivers using a GPS.