Thank you. I came here to point out that anyone with a few traffic cones, a hi-viz vest, and a bucket of paint could sneak onto the freeway system at night and

Thank you. I came here to point out that anyone with a few traffic cones, a hi-viz vest, and a bucket of paint could sneak onto the freeway system at night and "hack" it in such a way as to most likely kill someone in the morning. Humans are susceptible to these sorts of attacks too.