The law states that you riding a bike are a vehicle, so you must stop at all red lights & stop signs unless otherwise specified by signage or road markings. That means that turning right, you may proceed when you have the right of way. But you gotta look behind you & to your left for larger & faster vehicles that may attempt to overtake you while turning. That is not legal, but many do it anyways, as you are technically not allowed to overtake or change lanes on a single lane through an intersection. Turning left is the same thing, they must give you room to make the turn & not attempt to overtake till you have completed the turn & there is enough clearance. Going straight ahead they must give you room (in PA it is 3 feet), so technically you can go before the vehicle to your left.
Many drivers are completely clueess about this stuff & may drive agressively thinking they will "teach you a lesson". Call the cops & give them the vehicle information & licence plate number. The driver could be charged with any number of offenses ranging from reckless driving to attempted assault with a motor vehicle. This is the sad state of things in many places unfortunately.
Simply stated, if there is room, stop at the line, if there is not, keep behind vehicle in front of you, and stay visible to them if possible. If you cannot be visible, give a car length space.
This list of rights & rules has kept me safe for many years & opened up routes that would otherwise not be possible.
- Andy