Topeka ? Tuesday was deadly day on Kansas roadways, with four separate crashes claiming seven lives.

A pickup truck collided with a tractor pulling on a western Kansas highway, killing three of the truck’s passengers and sending both drivers to the hospital with injuries.

The accident on Kansas 4 in Rush County was one of four fatal accidents throughout the state Tuesday in which a total of seven people were killed, two of them children.

The Rush County collision occurred when the pickup struck the tractor while it was turning off the highway into a field, The Kansas Highway Patrol said.

Those who died at the scene were Jose R. Villarreal Jr., 47, of Ellis; Ricky Dale Hernandez, 35, of Ellis, and David Scott Florian, 36, of Hays.

A father and son were killed about six miles east of Meriden, in Jefferson County, when they were thrown from a skid loader that tipped forward then rolled over. Michael A. Fawl, 28, and Michael H. Fawl, 5, died at the scene, the patrol said.

None of those killed in the two accidents was wearing a seat belt, The Topeka Capital-Journal reported.

In Crawford County, a head-on collision between two vehicles on Kansas 47 about 2 miles west of Girard killed 28-year-old Jaime Rebecca Hallacy. Seventeen-month-old Kylie Jean Hallacy was taken to Children’s Mercy Hospital in Kansas City, Mo., and the other driver was taken to Girard Regional Medical Center. The patrol said the Hallacys lived in Walnut, but it did not specify how they are related.

All three people in the accident were wearing their seat belts, the patrol said.

And a one-vehicle rollover crash Tuesday morning in Johnson County killed a 15-year-old girl, the patrol said.

Raina Esparza, of Kansas City, Kan., died when the vehicle her father was driving rolled over on Interstate 35 in Overland Park. She was pronounced dead at the scene. Her parents were hospitalized. The father and daughter weren’t wearing seat belts but the mother was, the patrol said.