Stoned Driving: How can police tell?
With recreational marijuana use legal in eight states there are more drivers on the road who are potentially under the influence of marijuana but police have no way to measure it.


With recreational marijuana use legal in eight states there are more drivers on the road who are potentially under the influence of marijuana but police have no way to measure it.

Self-driving cars are being developed more rapidly than most experts thought possible. But even if they’re technically possible, can we be assured of their safety?

Scientists are learning that people who repeatedly drive drunk are not all the same in the personalities and brain chemistries that motivate their behavior. An expert discusses new research suggesting different ways to reduce recidivism in each of these personality types.

Government researchers and auto companies are developing a device called DADSS (Driver Alcohol Detection System for Safety) that can inobtrusively test whether a person is drunk as he attempts to start his car. If so, DADDS makes the car inoperable. Experts explain how it will work and debate some of the issues surrounding its possible rollout.

Auto accidents are the largest cause of post-traumatic stress disorder. About 25 percent of people injured in car crashes will suffer from it. Accident survivors and one of the world's foremost experts discuss variables that make PTSD worse and those that make recovery easier, as well as the essentials victims must carry out to recover.

Few people are aware that the vehicle occupant most likely to be hurt in a crash is the one in the front passenger seat. Experts discuss why this occurs, the different injuries that can occur there, and many ways car occupants can protect themselves from injury.

Teenage drivers are the most dangerous on the road. Graduated driver's license programs have improved their record, but a new study finds teen drivers are often distracted before crashes. Brain biology plays a role. Experts discuss distracted driving and ways to get teens to pay attention on the road.
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