L.A. drivers are preparing for a 53-hour shutdown of a 10-mile stretch of the 405 freeway from July 15th to 18th, which could paralyze the whole area.

In true Hollywood style, L.A. Metro asked Estrada -- a.k.a. Officer Frank "Ponch" Poncharello -- to record the PSA (in English and Spanish) reminding drivers to stay away from the area during the closure.

Watch the English-language version after the jump.

Estrada starred in 'CHiPs' from 1977-83. In real life he serves as a reserve police officer, and he told TMZ that he's always happy to help out his fellow cops: "When law enforcement asks for help, the answer is always yes."

Thanks to Neatorama.com and YouTube.com.