You may have been asked many questions about why Yellow Cabs are orange.
If you’re wondering, the answer is this.
Back in 1915, Hertz purchased the Walden Shaw Livery Company which had previously operated a mixed fleet of vehicles as taxis, from Thomas Flyers to Cadillacs. By sheer luck, Hertz had read an article in a scientific journal detailing colour tests, and had selected yellow (with a mixture of red) as the most visible and impressive colour for his new taxis.
Hence, Yellow Cabs are orange because it is the most visible and impressive colour!