While New Hampshire itself manages to survive winter storms and chilly weather during the year, motorcyclists still head out on the roads despite these conditions. Motorcycle crashes are often fatal due to the drivers and passengers having few protections against impact. In the winter, a passenger vehicle that sideswipes a motorcyclist could throw them onto ice and snow, causing broken bones and other injuries simply due to being unable to control his vehicle. This is part of why it's so important that drivers are careful in adverse weather conditions and any time they're driving.
Even though weather can have a major impact on road safety, neglectful drivers cause many of the accidents that take place. This is in part due to the fact that motorcyclists can be more difficult to see on the roads, but it may also be because drivers aren't taking the time to really look where they're going before turning, passing or stopping their vehicles.
Motorcyclists are around 26 times more likely to die when involved in a crash than passenger car riders. They are also five times more likely to be injured, making crashes between a car and motorcycle potentially life threatening to the motorcyclists. Interestingly, as of January 2015, New Hampshire does not require motorcyclists to wear helmets, which could put you at risk if you are hit by a driver.
Some good news is that the number of people being killed in motorcycle crashes is starting to decline. This could be thanks to national helmet laws, although New Hampshire is not participating at this time, and better traffic patrolling. The U.S. Department of Transportation has released data showing that 4,668 people were killed in motorcycle crashes in 2013, which was a drop of 6.4 percent from 2012.
Source: Insurance Information Institute, "Motorcycle Crashes" accessed Mar. 04, 2015