Ambrose was considered a pioneer of the Houston traffic scene. According to KUHF:
While at the American Automobile Association in 1975, he volunteered to sit in for the resident traffic reporter on occasion, and after the ammonia truck disaster 1976, co-founded the area's first network traffic reporting service, Houston Traffic Central. In 1989 he joined Metro Networks, where he stayed as senior anchor and director of community relations until 2003.
Ambrose was 69.
I met Ambrose last year when I taped my appearance on KUHT 8's Houston 8 (both stations are in the same building). He seemed like a really nice, well-liked person.