We don’t have all the facts, but we suspect this driver was on his phone, texting or otherwise distracted.  It would be nearly impossible to fail to notice a class 8 truck, pulled all the way off the road with flashing amber lights.  Please warn you people that even with warning signs and flashing lights, they still face risk every day.  The motoring public rarely does what they are “supposed” to do.  Expect them to misbehave

Observer Dispatch (2018, June 14). Clayville man charged after crashing into highway department vehicle. https://www.uticaod.com/news/20180614/clayville-man-charged-after-crashing-into-highway-department-vehicle