Marijuana has been legalized in several states. Some people believe this has resulted in an increase of impaired drivers on the road and that traffic fatalities have increased as a result. While some drug tests taken at the scene of accidents do indicate the presence of marijuana, such tests only reveal that the drug has been usedâthey do not indicate actual intoxication, as indicators of marijuana use can stay in the system for days or even weeks after actual use. This is unlike alcohol, where a roadside test is a clear indicator in most cases of intoxication.

What are some likely ethical issues arising from such testing?

If people are using marijuana for medical reasons, they will most likely test positive for the drugâs presence all the time, yet they will need to be able to drive. How can a "legal limit" be reasonably set if intoxication is not measured by current tests?

Marijuana is a highly addictive drug that is schedule 1 drug which is characterized due to highly abusive. However, it is beneficial in many conditions such as appetite loss, Alzheimer's, glaucoma, intense pain, and many more, and possibly more benefits need to be researched.

Medical marijuana is legal in many states in the United States but with restricted use only. It is only available with a valid prescription. The effect of marijuana can last for several hours to days. If the driver is on a marijuana dose can show a positive result even if he has taken the dose two or three days before the test. It is an ethical issue to be considered. The driver should carry the prescription to avoid being charged for driving under the influence of drugs. One can not set a legal age limit to the use of marijuana as driving under influence of drug is fatal for everyone on the road including himself.