Vigillo released DDI a few months ago and Carriers have been rapidly adopting it as an effective measurment system to identify those drivers who will most likely be prioritized for review by the FMCSA. I just completed a study of how DDI is being applied to almost 1M drivers in the Vigillo customer database. I pondered two questions.
1. Does the DDI score effectively illuminate the drivers most likely to be subject to scrutiny by FMCSA during an intervention.
Vigillo designed DDI to give a motor carrier the tools it needs to stand in the shoes of the FMCSA and understand how the agency prioritizes drivers for review during an intervention or complaince review. With hundreds, thousands, or tens of thousands of drivers, motor carriers struggled with how to evaluate CSA scores and understand where their focus should be. The slide below shows how over 900,000 drivers are grouped by DDI and prioritized for review.
It is very clear that DDI scores increase in direct proportion to the likelihood that the FMCSA will want to review that driver. Mission accomplished, DDI Scores are an effective determinant for prioritizing drivers for review and align with the enforcement priorities established by the FMCSA (EX: Red Flags Drivers average a DDI score of 97.38 – High Priority, Drivers with Low DSMS Scores average DDI Score is 20.10 – Low Priority)
2. Do DDI scores correlate to higher crash risk?
A second stated goal of the DDI Score is to give Carriers a system to reasonably gauge the crash risk of their drivers. The slide below, again a study of over 900,000 drivers shows a very good correlation between DDI Score and Crash Risk. (EX: Drivers with no crashes have an average DDI Score of 33.67, while drivers with three crashes have an average DDI Score of 78.65)
Vigillo will continue to gather data on DDI and its use in managing CSA Scores. If you have a story of how you used DDI, share it with the group here.