Evaluation of a supervisor training program for ODOT’S EcoDrive program.
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Summary
This study evaluated the effectiveness of a supervisor training intervention designed to enhance the Oregon Department of Transportation’s (ODOT) EcoDrive program, which promotes fuel-efficient driving behaviors to reduce CO2 emissions. The research was motivated by prior findings indicating that informational campaigns alone only increased eco-driving behaviors when employees perceived strong supervisor support and personal motivation. The study aimed to determine if training supervisors to actively support these practices would yield incremental benefits compared to an informational campaign alone. The researchers employed a quasi-experimental design involving three public-sector organizations: ODOT, the City of Hillsboro, and Washington County. Participants were divided into a control group receiving only EcoDrive educational materials and an experimental group where supervisors received additional training, including a video, written materials, and reminder emails. Data were collected from 144 unique participants across three time points: baseline (Time 1), two months post-intervention (Time 2), and six months post-intervention (Time 3). Analyses focused on matched responses from 50 participants for Time 1 to Time 2 comparisons and 48 for Time 1 to Time 3 comparisons, using mixed-method ANOVAs to assess changes in attitudes, knowledge, and behaviors. Results indicated that participants generally reported increased use of eco-driving behaviors at follow-up surveys compared to baseline. However, the study did not find statistically significant evidence that the supervisor training intervention produced greater improvements in eco-driving behaviors or attitudes than the informational campaign alone. This lack of difference may be attributed to the limited sample size and statistical power. Nevertheless, the supervisor training successfully improved specific process indicators: employees in the training group reported higher levels of supervisor support, more frequent communication about eco-driving, and greater exposure to EcoDrive materials. Additionally, these employees rated the program materials as more useful than those in the control group. Energy-reducing attitudes also increased significantly by Time 3. The findings suggest that while supervisor training effectively enhances perceived support and engagement with eco-driving initiatives, it may not directly translate into measurable behavioral changes within short timeframes or small samples. The study highlights the importance of supervisor involvement in organizational sustainability programs but notes that larger-scale studies with objective fuel consumption data are needed to fully assess the intervention's impact on actual driving behaviors and fuel efficiency.
Key finding
Supervisor training significantly improved indicators of supervisor support and perceived material utility but did not produce statistically significant incremental increases in self-reported eco-driving behaviors or attitudes compared to an informational campaign alone.
Methodology
field_study
Sample size: 144
Provenance
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| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | success | cached | — | — | 2 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 3 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Applied Guidance: countermeasure evaluation
- Empirical Findings: self report data