The North American Council for Freight Efficiency (NACFE) has released the full dataset and initial findings from Run on Less — Messy Middle, stating that all of the powertrains from the Run “performed well,” and that deeper analysis will continue in the weeks and months ahead.
The release includes detailed operational data from 14 trucks, each provided as an individual CSV file containing time-stamped records every 10 seconds across the full 18 days of the demonstration. To support deeper analysis, NACFE has also published a PDF data dictionary that defines every column, variable, and unit, along with notes on data processing methods and context. According to Yunsu Park, NACFE’s Director of Engineering, the open dataset is intended to help fleets, technology developers, and analysts get more comfortable with emerging technologies, uncover new insights, and explore creative ways to advance freight efficiency.
The dataset captures real-world performance across a diverse mix of fleets, duty cycles, and technologies, giving decision-makers a rare look at how operational choices influence energy use, cost, and emissions. Because the data are granular and tagged to real operating conditions, fleets and researchers can benchmark against their own performance or test “what-if” scenarios with realistic precision.
NACFE will convene a limited-attendance “Potluck” Data Workshop in Boulder, Colorado, on February 17–18, 2026, focused on operations, cost, and emissions. Several participating fleets and others will review analyses and share insights from the event.
