Towards a Fully Instrumented Merge: A Staggered-Rollout Field Trial of a Zipper-Merge Campaign, Scored by a Purpose-Built Dashcam-Vision Legitimacy Instrument Across 18 Work-Zone SitesResolving to Towards a Fully Instrumented Merge: A Staggered-Rollout Field Trial of a Zipper-Merge Campaign, Scored by a Purpose-Built Dashcam-Vision Legitimacy Instrument Across 18 Work-Zone Sites…