Yes, in fact, there have been several across the county over the years.
William Bonin actually killed similar victims to Kraft at the same time in the same area leading to some confusion – which is very rare, two serial killers, killing the same type of victims (Bonin were slightly younger) in the same area at the same time.
Patrick Kearney was also another “Freeway Killer” he killed his victims in 1977 but unlike Kraft or Bonin he shot his victims.