The article provide this: "Despite billions spent on safety technology, fatal truck-involved crashes are up ≈40% since 2014"

Though I wonder how much that number compares to how much the trucking industry grew in that time. If it grew 200% that would actually mean a big win for safety.

Edit: some quick, AI driven research suggests it might've grown 20%. So... Still an issue

I just looked briefly at the data provided by the NHTSA, and what I see is a jump after the pandemic, followed by declines in 2022 and 2023, contradicting the OP:

https://www.nhtsa.gov/crash-data-systems/fatality-analysis-r...

https://highways.dot.gov/safety/learn-safety/roadway-safety-...