Skip to main content
Back to Show
PBS News Hour

Challenges of determining if someone is too high to drive

As states across the country legalize marijuana, efforts to determine whether someone is too high to drive is becoming a thorny public health issue. From brain functioning analyses and phone apps to training police officers on looking for signs, Hari Sreenivasan reports from Massachusetts, the latest state to start opening marijuana dispensaries, on efforts to resolve the dilemma.

Support Provided By
Season
September 6, 2025 - PBS News Weekend full episode
26:45
September 6, 2025 - PBS News Weekend full episode
September 5, 2025 - PBS News Hour full episode
57:46
September 5, 2025 - PBS News Hour full episode
September 4, 2025 - PBS News Hour full episode
57:46
September 4, 2025 - PBS News Hour full episode
September 3, 2025 - PBS News Hour full episode
57:46
September 3, 2025 - PBS News Hour full episode
September 2, 2025 - PBS News Hour full episode
57:46
September 2, 2025 - PBS News Hour full episode
September 1, 2025 - PBS News Hour full episode
57:46
September 1, 2025 - PBS News Hour full episode
August 31, 2025 - PBS News Weekend full episode
26:45
August 31, 2025 - PBS News Weekend full episode
August 30, 2025 - PBS News Weekend full episode
26:45
August 30, 2025 - PBS News Weekend full episode
August 29, 2025 - PBS News Hour full episode
57:46
August 29, 2025 - PBS News Hour full episode
August 28, 2025 - PBS News Hour full episode
57:46
August 28, 2025 - PBS News Hour full episode
August 27, 2025 - PBS News Hour full episode
57:46
August 27, 2025 - PBS News Hour full episode
August 26, 2025 - PBS News Hour full episode
57:46
August 26, 2025 - PBS News Hour full episode
Active loading indicator