A woman was struck by a vehicle and seriously injured Thursday evening on a Highway 101 exit ramp in downtown Santa Barbara, according to the Santa Barbara Fire Department.

Emergency personnel were dispatched to the southbound freeway exit ramp at Castillo Street at about 7:15 p.m., according to the California Highway Patrol.

The pedestrian, a woman who appeared to be homeless, stumbled out of the bushes and into the path of a pickup truck exiting the freeway, fire Capt. Kell Hardin told Noozhawk.

Several motorists stopped to render assistance, and the pickup driver who hit the woman remained at the scene.

The victim was unconscious and appeared to have suffered major head injuries, Hardin said.

She was taken by an American Medical Response ambulance to Santa Barbara Cottage Hospital for treatment of her injuries.

Her identity and details on her condition were not available Thursday night.

The collision was under investigation by the CHP.

Earlier on Thursday, witnesses observed a woman standing and gesturing right at the edge of the freeway near a homeless encampment at the northbound Castillo Street entrance ramp.

Noozhawk executive editor Tom Bolton can be reached at tbolton@noozhawk.com. Follow Noozhawk on Twitter: @noozhawk, @NoozhawkNews and @NoozhawkBiz. Connect with Noozhawk on Facebook.

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Tom Bolton, Noozhawk Executive Editor

Noozhawk executive editor Tom Bolton can be reached at tbolton@noozhawk.com.