A 27-year-old Vallejo woman was riding a bicycle with an attached trailer containing two girls ages 2 and 5 in the intersection of Elliot and Mini drives around 7:45 a.m., Lt. Abel Tenorio said.
The bicyclist was traveling north on Elliot Drive approaching Mini Drive and a 38-year-old Vallejo man was driving east on Mini Drive, Tenorio said.
The vehicle struck the trailer in the intersection causing it to spin around, Tenorio said.
The woman and 5-year-old girl suffered moderate injuries and were taken to Sutter Solano Hospital in Vallejo, Tenorio said.
The 2-year-old girl suffered more serious injuries and was flown to the UC Davis Medical Center in Sacramento, Tenorio said. The extent of their injuries was not released.
The driver gave police a statement, Tenorio said.
Vallejo fire Capt. Erick Diez said the children were in a small metal frame and mesh fabric trailer attached to the back of the bicycle.
There was a stop sign but no traffic light at the intersection, Diez said.
Firefighters had to cut and dismantle half the trailer to free the children and it wasn't clear if there were child restraints, Diez said.
"The mother may have freed them. The trailer was smashed," Diez said.