It's important to remember that Uber/Lyft vehicles are owned by individual operators and thus, Uber/Lyft doesn't have any way to clean vehicles or even enforce that drivers clean them. It's up to the individual drivers to clean them which may or may not happen frequently (more likely). The companies do give driver's general guidance though:
https://help.uber.com/driving-and-de...6-ec0047036b34
https://www.lyft.com/safety/coronavi...mmunity-health
Your safest bets are to do the following when riding in any sort of for-hire vehicle or public transportation (taxi, Uber, Lyft, bus, train, etc.):
- Wear a mask
- Wear gloves and/or use disinfecting wipes on any surfaces you contact with your bare skin
- Avoid touching any part of your face
- Wash your hands thoroughly as soon as possible after exiting the vehicle or use hand sanitizer
While some drivers will make an effort to keep their vehicles clean, you can't assume anything, and even the most conscientious drivers might not do a 100% thorough job in-between trips, so it's important to protect yourself accordingly if you want to be on the safe side.