tumblr. Uber is trying out a tiered fee structure that affects new drivers in San Francisco and San Diego. Andrew Caballero-Reynolds/AFP/Getty Images. Uber is testing a fee structure that charges new drivers in San Francisco and San Diego a 30 percent commission -- 5 percent more than it takes from its current drivers.The ride-hailing service, which matches passengers with drivers via a smartphone app, typically takes a 20 percent to 25 percent flat commission.umblr. Uber is trying out a tiered fee structure that affects new drivers in San Francisco and San Diego. Andrew Caballero-Reynolds/AFP/Getty Images. Uber is testing a fee structure that charges new drivers in San Francisco and San Diego a 30 percent commission -- 5 percent more than it takes from its current drivers.
Â· just now. Report Abuse. Well, vitamin D is usually considered a vitamin rather than a hormone, but it functions as a hormone by causing an increase the absorption of calcium in the gastrointestinal tract, as well as influence the deposition and reabsorption of bone.
1 Vitamin K is an important fat-soluble vitamin that plays critical roles in protecting your heart, building your bones, optimizing your insulin levels, and helping your blood to clotproperly. 2  Vitamin K is an important adjunct to vitamin D, and nearly everyone tested is deficient in both.