One of the most common questions we get from our international visitors is, "can I make a right hand turn at a red light?" The answer is yes, EXCEPT when there is a sign that says "NO TURN ON RED."
Renting a car is the best to get around in Los Angeles. LA's public transportation is not as developed as many major cities from around the world. Given that LA covers such a large geographic area, a car allows you to experience a lot more instead of spending wasted hours on bus/train connections.