HARRIS COUNTY, Texas – Authorities are investigating a double fatal vehicle crash in the Baytown area.

The incident happened at about 6:30 a.m. Wednesday in the 5400 block of Sjolander Road, the Harris County Sheriff’s Office confirms.

Deputies tell KHOU 11 two men in a gold Dodge Stratus were heading northbound when the driver veered into oncoming traffic.

Both men were wearing neon yellow safety vests. Deputies say based on personal identification, it appears the men were father and son. Both had photo ID cards inside the card for a chemical plant located on Sjolander Road just north of I-10. Deputies say based on their clothing and their direction of travel, it seemed like the men were on their way to work.

Photos: Deadly head-on crash near Baytown

The car slammed head on into a green Ford F-350 dually truck. The father and son died at the scene.

Two kids in the pickup, a 14-year-old girl and 11-year-old boy, were airlifted to the Medical Center. They were listed in critical condition but are expected to survive. Their father was driving the truck and was taken to the Medical Center by ambulance.

Deputies say they do not know why the car crossed the middle line, but the driver of the Ford truck said it looked like the sedan's driver was dozing off behind the wheel just before impact.

Harris County Sheriff’s deputies are working to recreate the crash so they can figure out what went wrong. Deputies used a patrol SUV and a piece of technology to register things like traction and speed and skid marks.

The car is registered out of Brownsville, Texas which is the Rio Grande Valley. Deputies say they’re going to check with Brownsville police to help track down the family of the father and son.

The roadway did not fully reopen until about 10 a.m.

A nearby resident, Gary Moreno said he and his wife, who is a trauma nurse, heard the crash and ran outside to render aide until authorities arrived.