The service is open to the public and scheduled to begin at 11 a.m. at the Sleep Train Pavilion at 2000 Kirker Pass Road in Concord.
Moody, 29, was an eight-year veteran of the Police Department and left behind a wife and two young daughters. He was also a canine officer and a member of the department's SWAT team.
He had been responding to a report of an assault on the morning of Oct. 4 when his patrol car spun out and struck a utility pole on Marina Bay Parkway just north of Regatta Boulevard.
He was pronounced brain dead the following day, but before he was taken off of life support, two of his organs were donated to a patient at the University of San Francisco Medical Center who had less than a day to live, Richmond police Lt. Mark Gagan said.
At about 7:30 a.m. Tuesday, a police motorcade will take Interstate Highway 80 east from Richmond to a funeral home in Vacaville. The motorcade will then take I-80 west to Interstate Highway 680 south, then state Highway 4 east to Concord.
After the service, the motorcade is expected to depart between 12:30 p.m. and 1 p.m. and head north on Kirker Pass Road/Railroad Avenue to Highway 4 west. It will continue to I-680 north and then to I-80 east back to Vacaville for a private funeral.
The California Highway Patrol will be conducting a rolling traffic break for the procession.
Members of the public who wish to view the procession are asked to watch from sidewalks on Railroad Avenue and not to stop on the highway.
A memorial fund has been established for Moody's family at the Mechanics Bank. Donations can be made to "The Memorial Fund for Officer Brad Moody" and dropped off at any Mechanics Bank branch.