Eagles head coach Andy Reid's two oldest sons found themselves huddling with a host of law-enforcement officials last night after a rough day on the roadways.

Police said Garrett Reid, 23, was involved in a frightening midafternoon car crash in Plymouth Township that left another driver seriously injured.

Plymouth Township Deputy Chief Joe Lawrence said Garrett Reid was traveling eastbound on Germantown Pike shortly before 2:30 p.m. when his black SUV slammed into a red Ford Taurus at Arch Road.

The impact of the crash tore off the front end of Reid's boxy SUV, but Lawrence said the coach's son was not injured. Police, however, had to use a Jaws of Life device to free the unidentified female driver from her crumpled Ford. The woman, who is in her 50s, was airlifted to the Hospital of the University of Pennsylvania, where she was listed in serious condition last night.

Lawrence said Garrett Reid did not attempt to leave the scene of the accident. He was questioned for several hours by cops and released about 7 p.m. No charges were filed against Garrett, who once played football at Harriton High School, but Lawrence said the investigation was ongoing.

"There's a traffic light at that intersection," Lawrence said. "We're looking at whether one of the drivers went through a [red] light."

The deputy chief declined to comment when asked if police had taken any blood samples from Garrett for testing.

While Garrett lingered near the scene of his serious smashup, police said, his brother, Britt, 21, arrived for moral support.

According to several reports, Britt Reid was soon detained by police for having allegedly been involved in a road-rage incident in West Conshohocken earlier in the day. West Conshohocken police officials were not available for comment last night.

Eagles officials also declined to comment, but said the football team was aware of both incidents. Reporters' attempts to reach Andy Reid, who was in California, were unsuccessful.

Staff writers Les Bowen, Gloria Campisi and Simone Weichselbaum contributed to this report.