Officials from the Alameda County Coroner's Office said they believe 79-year-old Berkeley resident Nadine Lambert was on her way to work when her car was struck at 9:36 a.m. at the intersection of Cedar and Oxford streets.
Lambert was pronounced dead at 10:14 a.m., said Deputy Keith Leeper of the Alameda County Coroner's Office.
Lambert had been a professor at the Graduate School of Education at UC Berkeley since the 1970s, said P. David Pearson, the school's dean.
"I have nothing but the utmost respect for her," he said after learning of the accident. "Nadine is just a wonderful person."
Pearson said Lambert retired in the 1990s but has returned to teach by request every year since then. He said she was influential in campus issues and was a leader in her field.
"She's a nationally respected figure in the field of school psychology," he said. "I cannot tell you how tragic this is and how sad I am."
Police said there is an ongoing investigation into the accident but know the 5,600 pound dump truck was heading west on Cedar while Lambert was heading south on Oxford in her Ford sedan. The truck belongs to a private company and is not the property of the city of Berkeley, said Berkeley police Lt. Matt Morizono.
The truck collided with Lambert's car when the truck driver was unable to stop the vehicle, police said. Morizono said he believed the truck driver ran a red light, but could not confirm details.
No other cars were involved in the collision, but Morizono said the accident occurred during a heavy traffic period.
Police officers questioned the truck driver at the scene but did not arrest the driver.