City Of Industry, California Speed Traps
Seems to be at night, but can be during the day, unit hidden behind car dealership wall looking for departing vehicles from the freeway exiting too fast. They also look for cars running red lights from the offramp.
There are two watch points; one near the Sears entrance to mall parking lot. Cars get stopped there all the time.
Second point is along Colima south of the Puente Hills Mall near Albatross.
Also note, there is a hard to see 4-way stop without traffic lights on Albatross on the east entrance to the mall parking lot that I see a lot of cars miss and run. I rarely see cops stop anyone there but watch out for that because accidents happen there all to often.