We've already discussed Amendment 64 and how it's affecting cases of marijuana possession in Colorado. But drug policy isn't the only thing affected by the legalization of some marijuana possession and consumption. Colorado's laws on impaired driving need to be changed to accommodate legal marijuana.

The state has tried and failed several times to define an acceptable level of THC in a driver's system. Because marijuana affects everyone differently and stays in the body for a long time, this has proven to be a struggle.

Law enforcement officials want to set the limit at 5 nanograms of active THC per milliliter of blood. Similar standards have been rejected in the past but this time around both sides of the aisle seem to be optimistic about a potential compromise.

In a recent draft, people who were caught driving over the set limit would have a chance to argue that they were not impaired in court. This differs from DUI laws, which assume that anyone with a blood alcohol level of 0.08 percent or higher is automatically considered impaired.

The state of Washington also legalized the use of marijuana in the November election. Their amendment built in a legal limit for motorists at 5 nanograms per milliliter, the same amount being proposed in Colorado.

Two other states have set the limit at two nanograms and several have zero-tolerance policies, meaning driving with any level of THC is illegal. That could prove problematic as marijuana remains in the body long after its effects have worn off.

As Colorado courts and prosecutors adjust to new laws governing the use of marijuana, defending any related charges can be a challenge. It is especially important during this time to work with a criminal defense attorney experienced in related matters. The right lawyer can help you respond to charges, navigate changing laws and work for the best possible outcome in your case.

Source: The Denver Post, "Colorado heading toward a too-stoned-to-drive standard, experts say," Jessica Fender, Dec. 11, 2012