How ISS and CSA Scores Apply to Bypass Programs
Although similar, CSA and ISS scores have distinct differences that come into play during a truck’s route.
The CSA score is a collection of safety data of roadside inspections, crash reports, investigation results, and registration details from the last 24 months, aggregated by the Federal Motor Carrier Safety Association (FMCSA).
A fleet’s ISS score is an aggregation of the CSA scores. Ranging from 1 to 99 (100 being out of service), an ISS score reflects a carrier’s overall safety profile. The lower the score, the better the safety rating. Bypass technology screens for a vehicle’s USDOT number to locate the fleet’s ISS score in the federal system.
A great ISS score will typically result in more bypasses; a truck with an outstanding score could receive bypasses up to 98% of the time. Bypass services, like Drivewyze PreClear®, use the ISS score to determine the likelihood of performing an inspection.
However, a poor ISS score does not mean that a fleet won’t receive any bypasses. It may receive fewer, but a carrier can improve its safety score over time with a software-based bypass service that can automatically increase a carrier’s opportunity for bypass based on sheer volume.