At least seven people have died in traffic accidents in Oregon since the holiday weekend began.

Oregon State Police are investigating a Friday night collision about 15 miles north of the Oregon-Nevada border that claimed the lives of four members of a Nampa, Idaho family. Their southbound vehicle collided head-on with a truck on Highway 95.

Three victims were pronounced dead at the scene and the fourth died en route to a hospital.

The victims were the driver, 42-year-old Joseph Koudelka the Fourth, eleven-year-old Justin Koudelka and 14-year-old Joshua Koudelka and 17-year-old Joseph Koudelka the fifth.

The truck's driver was not injured.

In Portland, a motorcycle driver and his teenage passenger were killed yesterday when the speeding driver lost control.

They were identified as 28-year-old Jason Lee Cox of Gresham and 17-year-old Jessi Diann Clawson of Estacada.

A Hillsboro man, 57-year-old Frederick Sunderlin, died on Interstate-84 yesterday afternoon when he was ejected from his motorcycle about ten miles west of Hood River.