House backs plan to test for pot impairment

HELENA (AP) — The Montana House is endorsing a plan to start testing drivers to determine possible marijuana impairment.

The chamber backed the bill Tuesday in a 68-31 vote before sending it to the appropriations committee to analyze a price tag of about $100,000 per year.

Supporters say it will crack down on driving under the influence of marijuana. The bill establishes a legal standard of allowable amount of THC — an ingredient of marijuana — that can be in a person's blood.

Republican sponsor Rep. Doc Moore of Missoula says the measure aims to make highways safer. He says many drunken drivi...