There are way too many laws and regulations when it comes to maneuvering your vehicle in and out of lanes. The general public usually just remembers the most common ones which is - you cannot cross a double solid yellow line. Those are mainly the ones you see that is utilized for the carpool lanes. Sometimes we violate the rules of the lanes without even acknowledging it. Unfortunately, since they are considered to be moving violations, they are a point or a point and a half against your driving record if you are convicted -depending on the type of driver you are.