A three-vehicle accident on Route 140 in front of the state police barracks sent four people to Carroll County General Hospital and snarled rush hour traffic for several miles about 4 p.m. yesterday.
Police said none of the injuries appeared to be life-threatening.
As state troopers directed traffic around the scene, at least two other minor accidents occurred as motorists rushed to avoid the jam or gawked at the crash site.
Tfc. Doug Reitz said the first accident occurred when a Ford van from the eastbound lane made a left turn into the barracks and failed to yield the right of way. The van collided with a 1989 Mazda pickup truck, overturned and slid into a Geo Metro.
Crews quickly extricated two children, who were passengers in the van, from their seat belts. The driver, their mother, was trapped briefly under the --board until rescuers removed the front windshield, said Marion Davidson, chief of Reese Volunteer Fire Co.
The Geo's driver, believed to be a 37-year-old man, was immobilized on a stretcher before emergency crews transported him to the hospital.
Faith Frenzel of Hampstead, who was driving the Mazda, did not require medical treatment.
In addition to Reese, units from Manchester also responded.
Westbound traffic was stopped for several miles as police worked to clear the scene.
About a mile away, at the intersection of Reese Road and Route 140, three cars were involved in a pile-up which hampered eastbound traffic.
Identities of the victims were not available at press time.
In a morning accident near Silver Run, two people were injured in a four-vehicle accident at the entrance to Charles Carroll Elementary School as the children were arriving about 8:25 a.m.
The injured in the morning crash -- an adult and an 8-year-old student -- were released from Carroll County General after they were treated for minor injuries, a hospital spokeswoman said.
State police said a 1990 GMC pickup truck, pulling a trailer with two pieces of farm equipment and driven by Thomas Geib, 48, of Lebanon, Pa., was headed south on Littlestown Pike and failed to reduce speed for two cars stopped at the school entrance.
The pickup slammed into the rear of a 1987 Chevrolet operated by Diane Marie Beall, 36, of the 2300 block of Mayberry Road. The impact pushed her car into a 1982 Chrysler LeBaron that was waiting to make a left turn into the school driveway.
The LeBaron, driven by Ruth Ella Stonesifer, 39, of the 3400 block of Arters Mill Road, was propelled forward, crossed the center line and struck a 1990 Dodge van that was northbound and had just turned into the school driveway.
The van was driven by Donna Kay Tanner, 35, 3800 block of Old Hanover Road. Mrs. Tanner's 8-year-old son, Keith, was taken to the Carroll County hospital and released after treatment.
Ms. Beall, whose car was smashed in the front and rear, was released after treatment at Carroll County General.
Children who arrived on eight school buses after the accident were discharged on the highway to walk up the hill to classes.
Richard Huss, the school principal, complimented students over the loudspeakers in the building for their orderly trek past the wrecked vehicles.
He told the students that those taken to the hospital were not seriously injured and had been taken there as a precaution.
Traffic on the busy highway was backed up for approximately one mile in each direction as only one lane of the two-lane road remained open.