In this episode, the actress Carol Thurston is vacuuming at home when Broderick Crawford stops by to break news that her husband was killed in the line of duty. She is not wearing a bra in this or any of her scenes. No attention is ever drawn to it by the script, nor was it to be political or sexual. I just happened to notice and I am adding this review for nostalgia and fashion history purposes, not to be lascivious. I only hope reading this review will make you giggle and wonder why, as I did. Especially because in 2021, the cars and the clothing and home interiors on HIGHWAY PATROL are incredible to see. The scripts and the acting are pretty strong too. But I have never noticed braless women on tv reruns until the late 70's.
Maybe the costume department was trying to draw contrast between her regular-normal-pretty housewife character and the other featured actress, Cece Whitney, who brought all the 1950's blonde glamor, cone shaped boobs and jet black painted arched brows. Both characters also had awesome living rooms!