I personally have not been thru the roadblock but, I have lived in the area for 3yrs and can tell you that the Colton P.D. sets up a roadblock just about every 2-3 months with no warning that you are coming up to one nor do you have a chance to turn around. Also besides the roadblocks, cops will be sitting right on Indigo Ave. facing southbound towards San Bernardino Ave. as this is a stop sign waiting for their next victim.