What are the best types of dump trucks to buy in California?

Yep

 

there's was a new dump truck design for hot mix and giant rocks, the one below is for hot mix and not so much for hard rocks you can tear it up when I left a construction company they were just getting them in the one for just hot mix and stuff like base right below

I show another dump truck thats design for giant rocks and debris now the newer ones look a lot like the one I will show you pic is below but they can do both basically had do how the door is released from my understanding and the material the bed design made out of.

 

There's usually a member of the paving crew who walks beside the trailer and operates the dump lever. That way the windrows stay pretty much the same size.
On dirt jobs you can adjust your door chains to determine how much material comes out and you operate the dump valves from inside the truck.
The grader operator likes consistent size windrows and will let you know in a hurry if yours don't match the plan,

 

Slam bam is what we call them up North

 

A top hand can spread a load in a transfer or truck & pup like a blade did it.

 

Actually the best thing is not to buy a truck in Cali and pack up your family and move to a business friendly state.