(Radio Iowa) – Four people were killed in three separate accidents on Iowa’s roads Thursday. The state highway patrol says a semi ran a stop sign in Hancock County at midday, hitting a car and a pickup, killing two people in the car from Britt — Bruce and Debra Kamp — and injuring two others. About 5 PM on Interstate 80 in Polk County, troopers say a car collided with two other vehicles that were slowing down for congestion, killing 46-year-old James Bartels, the Altoona man driving the car. About 8:30 PM, Des Moines police say a four-car crash killed a 71-year-old woman. Police say an alleged drunk driver is charged.