Since so many head injuries are caused by traffic accidents, road engineering is an important aspect of prevention, as is speed control to avoid crashes. This aspect involves not only driver education and law enforcement, but for the road system to be designed as safely as possible, sources have determined.
There are a number of ways road design can prevent crashes. Well-utilized banking and services that are kept in high conditions can contribute a great deal to safety, making it less likely for drivers to lose control of their vehicles. Visibility should always be good and warning signs should be placed in order to prevent intersection crashes. Rural areas should have unidirectional traffic flow, to prevent head-on collisions. Urban areas like Manhattan and Queens can help prevent traffic accidents by placing median strips between streams of traffic so pedestrians can cross the street more safely.
No matter where the road its, or what kind of road it is, control of access is a quality to keep in mind, doctors have learned. Pedestrians and pedal cyclists should have their own paths. Traffic lights make pedestrian crossing both easier and safer. Lights can also control speed and traffic flow. There have been some attempts to control speed in urban areas with physical obstacles, but this has proven to be effective but unpopular.
Speed is sometimes necessary in some localities, but crashes that occur at high speeds are, of course, more dangerous. Freeways are good for this purpose, but education is required to insure these roads are used safely. In some places in the world, the addition of a well-maintained freeway system actually increased the death toll, authorities have learned.