Authorities said they had received complaints about a minivan’s driving moments before it crashed into a semi south of Hudson on Monday.
The van driver was declared dead when he arrived at the hospital, according to the Black Hawk County Sheriff’s Office.
The identity of the van’s driver hasn’t been released pending notification of relatives.
Another motorist had called to report a van that was heading north on U.S. Highway 63 speeding and weaving in and out of traffic. A short time later, about 11:15 a.m., deputies were sent to the crash on Highway 63 just south of the Highway 175 intersection.