Friday I saw the darndest thing. Location: Northern California Highway 101 North of Santa Rosa. Action: Caltrans truck spraying oil on the shoulder. Comments: It looked like a converted water spraying construction truck that is used to keep dust down during grading, but it was spraying oil. I know it was spraying oil as another truck was driving slow a hundred yards behind it, effectively closing the slow lane (right most lane), with a big sign saying somthing close to, “Oil Spraying Ahead”. I also noticed that there were pieces of plywood over the drains with sandbags on them.
Why would they do that?
Could it be in preperation for adding an additional lane, or weed control??? <—speculating wildly