In 2008, motorcycle fatalities peaked at 5,312 deaths. Then, despite increased motorcycle ownership, fatalities dropped down to 4,469 deaths in 2009. This phenomenon occurred on the heels of a decade-long pattern of dramatic increases in the motorcycle fatality rate. It was a glimmer of hope in the face of ever-increasing motorcycle deaths.

However, since that glorious year in the history of motorcycle safety, fatality rates have been creeping up again, and were last reported at 4,612 in 2011. So, what happened? What caused the dramatic decrease in deaths, and what is fueling the steady increase today?

In honor of that one magnificent year in reduced motorcycle fatalities, and in celebration of Motorcycle Awareness Month, we’re going to break down the key causes of motorcycle fatalities in America.

Cars Making Left-Hand Turns. This is the single most dangerous situation for motorcyclists, accounting for more than half of two-vehicle motorcycle collisions. 

Speeding. Supersport motorcycles are built for racing and modified for highway use, and sport motorcycles are very similar with a lower power to weight ratio. These bikes are designed for speed. The quick acceleration and excellent control make them great for experienced riders, however, the power may be too much for new riders, and too tempting for those prone to high-risk behavior. No matter what type of motorcycle you ride, take it easy and never go faster than your abilities and experience can handle.

Alcohol. Avoid alcohol when you ride. This is a no-brainer that too many motorcyclists fall victim to. Speeding and alcohol are the two biggest contributors to single-vehicle motorcycle accidents.

Head Injuries. The chances of dying in a motorcycle crash are exponentially higher without a helmet.

Lane Splitting. The close proximity to cars, reduced space for maneuverability, and the fact that cars don’t expect a vehicle to be passing them between lanes make the act of lane-splitting incredibly dangerous.

Road Hazards. Potholes, road cracks, slick conditions, uneven asphalt, gravel, roadkill and other debris pose a serious threat to motorcycle riders.

Inexperience. The increase in motorcycle safety classes and other programs may have had something to do with the dramatic decrease in motorcycle fatalities in 2009. Inexperienced riders should always seek out motorcycle safety courses that allow new motorcyclists to master both the basic, essential and advanced skills needed to ride safe.

Drivers and riders need to look out for each other, not just in May but all year long. Keep these common fatality causes in mind the next time you hit the road, and as always, #ridesafe.