Should Yellow Traffic Lights Last Longer?


Mats Järlström’s six-year crusade to make yellow traffic lights safer for drivers could finally be paying off.

In mid-October, an Institute of Transportation Engineers appeals panel agreed with the Oregon consultant’s claims that a long-standing, widely used formula for setting the timing of yellow traffic lights doesn’t adequately account for the extra time a driver might need to safely and comfortably make a turn through an intersection.

The three-person ITE panel findings [PDF] didn’t suggest what the timing should be. A separate ITE committee will propose recommended practice for so-called “dilemma-zone situations for left-turn and right-turn movements” that the

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