Yip.
Not to mention the people who literally stops on the entrance ramp because they either don't know how to merge or they think that they need to stop until it's free to go.
Or the person who is at a yield sigh, moves forward a few feet into traffic, then stops. I have seen multiple of those people get rear ended because the person behind thought that they were going.
OR the person in traffic who then decides that the car pool lane should be used and dives into it. One of my cars were totalled because of a jack azz thinking that.
Now that I ride, it's one of my biggest fears.