Highway Patrol was one of the best shows EVER! Used copters and planes way before other similar shows.
I get to watch it several times a week and of course it was my favorite show when I was growing up. Episodes are also available for free on IMDB!
FWIW a lot of the show was filmed in and around North Hollywood, Lancaster and several other California locations in San Fernado and Simi Valleys. Quite often street signs and business signs can be seen. There is an internet group that notes them and searches for them on Google maps.
It’s interesting to see that some are still around! - a Motel on Rt 14 IIRC - a couple of diners/restaurants and the construction company that developed the area. That name escapes me...I think it started with M and there is an entire town named for the developer.
The writers also often used real street names and they can be found on Google maps.
I got a weird kick the other day watching a late-1960s episode of “The FBI.” A scene was shot outside a motel and its surrounding parking lot. It looked awfully familiar, and I did a little research and verified it was a motel in North Hollywood that I stayed at myself one week around 1990.
As for “Highway Patrol,” if I were somehow restricted to only five tv-series to watch repeatedly for the rest of my life, “Highway Patrol” would indeed be among that five.