SACRAMENTO -- Shaken by the deaths of six patrolmen since last fall, the California Highway Patrol on Monday required its field commanders to review safety procedures with their officers.

The statewide "stand-down" will be in effect for two days for the CHP's 108 field offices but will not affect deployments or service, CHP Commissioner Mike Brown said during a news conference.

Brown said the rarely used action also will give officers the chance to vent their feelings. He said there was "a lot of anger" within the department over the rash of deaths, the latest of which came over the weekend when a Southern California motorcycle officer was struck by a suspected drunken driver during a traffic stop.

"We have been struggling with this internally," Brown said.

The stand-down applies to the department's 7,287 uniformed officers and its 3,112 non-uniformed personnel. Over the 48-hour period, field commanders will set aside several hours to discuss the events with their officers, reviewing the department's safety procedures and identifying any potential problems in policies or training.

Brown said internal reviews of the earlier deaths did not indicate the officers did anything wrong or that their deaths revealed gaps in department procedures. Nevertheless, any suggestions officers might give to improve procedures will be sent to the commissioner's office, CHP spokeswoman Fran Clader said.

Two of the officers were shot to death, two were struck during traffic stops, another died when his patrol car overturned during a chase and another was thrown from his motorcycle when it was struck from behind at a red light.

At fault, Brown said, were people who drive under the influence, motorists who speed and criminals "who want to kill a cop with a gun."

Brown called the high number of deaths in such a short time a coincidence.

"The facts and the causes are unique, and they're frankly not related," he said. "The reality is that these officers did everything we train them to do."

Motorcycle officer Gregory Bailey, 36, became the 209th CHP officer killed in the line of duty -- and the sixth since September -- when he was struck by a drunken driver Saturday night on Interstate 15, about 80 miles east of Los Angeles. The 10-year veteran had pulled over another suspected drunken driver when he was hit.

The other deaths since September:

* Officer Earl Scott, 36, shot Feb. 17 during a traffic stop on Highway 99 about 10 miles north of Modesto.

* Officer Andy Stevens, 37, shot Nov. 17 during a traffic stop on a rural road north of Sacramento.

* Lt. Michael Walker, 47, died Dec. 31 while setting flares on Highway 17 in the Santa Cruz Mountains. A vehicle that couldn't stop in time struck a parked CalTrans truck, which then hit Walker. The driver of the car, an Audi, also died in the collision.

* Officer Erick Manny, 35, died Dec. 21 when his patrol car overturned during a pursuit on Interstate 5 between Los Angeles and Bakersfield.

* Officer David Romero, 47, was killed Sept. 23 in the City of Industry when a suspected drunken driver slammed his car into Romero's motorcycle at a red light..