An elderly woman was hit by a car while walking along an east Petaluma road Tuesday morning and police investigators say an icy and fogged up windshield apparently blocked the driver's visibility.

Sgt. Ken Savano said Mary Lee, 78, was walking with two other women and two dogs at about 8 a.m. along Linnet Way when she was hit.

Lee suffered serious injuries and was taken initially to Petaluma Valley Hospital.

Driver Weizen Frias, 25, of Petaluma was turning from Hawk Drive onto Linnet Way and as he made the turn he hit Lee, Savano said.

The cause of the incident remained under investigation but traffic officers reported there was ice on the outside of the windshield and condensation on the inside, the officer said.

Frias also told officers the sun had been in his eyes, Savano said, and was a factor in the accident.

Linnet Way is near East Washington Street, toward the eastern edge of the city.

Savano said driving without a clear windshield or clear side and rear windows from ice or snow is illegal and can lead to being stopped and cited.