This report summarizes the findings and recommendations from dozens of after-action reviews conducted over an 18-month period, focusing on interstate work zones and maintenance of traffic (MOT) procedures. The underlying reports compile data including project locations, visual imagery, connected vehicle summary graphics, and qualitative discussions to evaluate work zone efficacy. By synthesizing these reviews, the document identifies systemic challenges in the intersection of traffic control design and field execution, offering actionable insights to improve safety, communication, and traffic flow.

The document details six primary themes and recommendations aimed at improving future MOT planning. It addresses geometric inaccuracies in design plans—such as failing to account for constraints like bridges and guardrails—and suggests using LiDAR surveys to achieve more precise dimensions. Additionally, it highlights the need for smoother vehicle transitions during lane shifts, better communication between design engineers and temporary traffic control contractors, and structured project close-out reviews to document lessons learned. Finally, the document provides tactical recommendations for managing traffic capacity, calling for standardized guidelines for rolling slowdowns within the Indiana Department of Transportation's oversight and stricter scheduling for barrier wall deployment to mitigate severe traffic queuing.

Infrastructure Assets: Highway Assets
Resource Types: Case Study/Practice Example, Research Report
Capabilities: Data & Information Systems
Management Processes: Monitoring & Adjustment, Performance Based Planning & Programming