Many of these rules are common sense. The State of New Jersey Department of Law & Public Safety website is very informative.

• Wear a helmet. The Snell Memorial Foundation is an excellent resource for choosing a helmet. The State of NJ website has a good, straightforward graphic “BE SURE YOUR HELMET FITS PROPERLY“.
• In general you should ride in the direction of traffic (usually the right side of the road).
• Obey all traffic signals.
• Ride no more than two abreast (when traffic is not impeded).
• Use standard hand/arm gestures to signal all turns.
• Try to avoid distractions while riding. For example if you must use a cell phone, stop first.
• Wear bright, reflective clothing.
• Wear gloves. They will keep your perspiring hands from slipping on the handlebars and protect your skin during a fall.

BicycleSafe.com has some excellent tips in its article HOW NOT TO GET HIT BY CARS. Makes sense, right?