WEST ALLIS, Wis. (CBS 58) – The ride-sharing company Uber is helping drivers learn how to spot victims of human trafficking.

The company is now sending tips to drivers on how to tell if a victim is in their car. Uber says victims are often transferred from place to place and a ride sharing service could be one of their modes of transportation.

Last week, Uber sent out in-app tips to more than 750,000 U.S. drivers. The tips gave information on how to spot red flags such as if someone seems like they are being held against their will, if they are being driven to several hotels or if they have branding tattoos.

“Uber drivers feel like they can make a difference,” Uber spokesperson Kayla Whaling said. “They could potentially have a victim that needs help so by paying attention, being vigilant and notifying authorities, they have an opportunity to possibly save a life here.”

In December 2016, a California Uber driver helped save a young woman he was driving when he noticed suspicious behavior and called police.