Traffic Laws?

Hello everyone,

My question is if I’m working on the side of the road is it legal for me to redirect traffic around me? That may include traffic traveling in the opposite lane for a short period of time, maybe no more than 150 feet at any given time. Essentially we would be moving down the road as the day goes on so we’d be like a “moving roadblock” in a sense. I will have an employee activity monitoring traffic at all times to best assist motorists while passing through my work zone. I’m just wondering if it is legal for me to do, I typically see a lot of landscaping companies and construction companies doing something similar but I’m not sure if they need a permit to do that or not. If you don’t have my answers can you please redirect me to a place where I can find them?

Country: United States of America

State: California

County: Los Angeles

We operate all through Los Angeles County

Thanks in advance for all your help!