People in US are doing just fine without special "taxi" training. You think Uber drivers does not know short cuts? Rating system is a far better motivator for drivers.

In Turkey and likely in other countries there are regulations for commercial drivers such as they need special health certificates etc but everybody knows it is turns to be just another paper you can buy. If Uber does not follow the regulations you mention, people has a right to choose anyway. The only regulation necessary is to make it deliberate in the cars. A sign telling "This driver does not have first aid training".