Many road accidents involve motorcycles and many have also lost their lives due to these unfortunate incidents. Most deaths from road accidents that I have seen in reports are usually caused by driving while on the influence of alcohol, not wearing helmets or if wearing one, it is not durable, one that can withstand great impacts.
Since the number of death has dramatically increased, the local government units have implemented strict policies on wearing helmets especially for motorcycle drivers and their passengers. Since then, many helmets like shoei helmets went off the racks so fast. I guess motorists have already learned the lesson that safety should always come first.