New research shows a link between an increased risk of car crashes and legal marijuana use. The Highway Loss Data Institute looked at auto collision claims where recreational use is legal. Some are skeptical of the study. Barry Petersen reports.

Study links legal pot to rise in car crashes

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Go beyond the weekday broadcast with "The CBS Morning Podcast.” Listen to in-depth and insightful conversations with newsmakers, authors, executives, celebrities and CBS News reporters.  Subscribe to "CBS Mornings ON THE GO" for the all the news you need to know to start your day in less than 20 minutes.

Go beyond the weekday broadcast with "The CBS Morning Podcast.” Listen to in-depth and insightful conversations with newsmakers, authors, executives, celebrities and CBS News reporters.&nbsp;Subscribe to <a href="https://podcasts.apple.com/us/podcast/cbs-mornings-on-the-go/id1487204915" rel="noopener noreferrer">"CBS Mornings ON THE GO" </a>for the all the news you need to know to start your day in less than 20 minutes.

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Study links legal pot to rise in car crashes

Study links legal pot to rise in car crashes