Four women were killed in Fauquier County when a tractor-trailer crossed over the dividing line on U.S. Rte. 17 and hit their car broadside, according to the Virginia State Police.

The driver of the tractor-trailer, Glenn L. Wagner, 59, of Highland, Ind., was jailed yesterday and charged with four counts of involuntary manslaughter, reckless driving and driving a vehicle longer than state regulations permit, police said.

Wagner was driving the 18-wheeler southbound on U.S. Rte. 17 north of Warrenton about 4:40 p.m. Thursday when he crossed into the northbound lane and struck the women's car, police said. The women's car was pushed by the impact into two other northbound cars, police said.

There were no other injuries.

The four women were killed instantly, police said. Police identified them as Corrie L. Pearson, 91; Hester H. Pearson, 77, and Rae E. Sutphin, 75, all of Marshall, a Fauquier County town, and Frances E. Fry, 36, of Harpers Ferry, W.Va., the driver.

None was wearing a seat belt, police said.

Police said the tractor-trailer driven by Wagner was 63 feet long. They said the state-allowed length for trucks on that section of U.S. 17 is 55 feet.

Police added they found no sign that Wagner applied the brakes or tried to avoid a collision.

Fry apparently swerved on the road in an effort to avoid the oncoming truck, the officer said. The car was on the shoulder when it was struck.

Wagner is being held on $40,000 bail. A preliminary hearing is set for Nov. 1.