Many seasoned technical advisors worked on the show: Chic Daniel, an LAPD living legend who served +20 years in Metro Division (C-Platoon and SWAT) ; Robert Deamer, a gang enforcement expert who is one of the most decorated veteran of Special Enforcement Unit (ex-C.R.A.S.H.); and Officer Todd Rheingold, a highly skilled Special Weapons And Tactics operator.
The series was originally titled "Metro" which was the division where the show was originally going to be set. Then, the title was changed to "RHD/LA" which was used for the fall schedule announcement. CBS ordered the final title believing that people would be confused about what "RHD" stood for.
The character of Officer Alton Davis, played by Mario Van Peebles in the episodes "A Life of its own" and "Alton Davis Redux", is based on famous Rampart Scandal whistle blower Rafael Antonio Perez. Just like Rafael Perez, Alton Davis got the same police background and occupation : Field Enforcement Section Undercover operations in the Rampart Division and moonlighting as a bodyguard for a famous Gangsta Rap Music Company.
In the 4 minute long CBS promo, both the narrator and Tom Sizemore can be heard saying the last name Coleman when referring to Sizemore's character. His character's name was shortened to Cole before the first air date.