Two cars collided and rolled over Saturday afternoon on the Merritt Parkway, but firefighters said the vehicle occupants’ injuries, while requiring hospital treatment, did not appear to be life-threatening.

The crash, about 1 p.m. in the highway’s southbound lanes between Exits 46 and 47, tied up traffic several miles during emergency operations at the scene.

Both cars were on their roofs when Fairfield Engine 3 was the first to arrive at the site, not far from the Trumbull border.

Two people were treated for their injuries at the scene, and according to the report, then transported to an area hospital for further treatment.

A hose line was deployed as a safeguard against fire that might be triggered by the crash.

Although one southbound lane remained open for more of the operation, both lanes had to be shut down while the damaged vehicles were removed from the scene, firefighters said.

“Due to the damage and location of the accident, the occupants were very fortunate that their injuries appear to be non-life-threatening and that they were not trapped inside the vehicles,” Assistant Fire Chief Scott Bisson said in a statement issued after the incident.

The last fire unit cleared the scene shortly after 2 p.m.