The driver turning left from W. Burnside westbound onto SW 10th Avenue is running a red light, the north/south traffic clearly has the green light. Traffic on 10th was two-way at that time, it’s one-way northbound now. Note the 10th Avenue ramp to the Lovejoy ramp in the distance.
There are many classic signs to be savored in this 1939 photo of a popular Portland intersection; the Wentworth & Irwin logo at far left is a beauty. The view is east on W Burnside and 10th Avenue, with SW Oak angling off to the right. I believe you can see one of the surviving “Great Light Way” arches down Oak at 3rd Street.