Grand jurors interviewed traffic engineers, as well as police, in Anaheim, Irvine, Newport Beach, Westminster, and Orange–all cities that do not use RLCs. They were asked why they do not. In general, representatives of these cities said they do not need RLCs because they do not have a red light violation problem that warrants use of the devices, or because they are using other ways to deal with the problem. Some of those methods are:

• Coordinating traffic signals, thereby reducing driver frustration
• Using four-way red signals so that everyone has to stop for a few seconds
• Creating better signage for complicated intersections
• Using greater police presence at problem intersections
• Replacing incandescent bulbs in traffic signals with larger, brighter light emitting diodes (LEDs) that cost less, operate more efficiently, and can be powered by battery for up to four hours in the event of a power failure.
• Creating double left-turn lanes where practical
• Installing LED systems, commonly known as "rat boxes," that can signal a traffic officer when someone has run a red light. This enables an officer to be positioned so he will not have to chase the offending motorist through a busy intersection, creating a potential danger for him and other motorists than the red-light-runner has already
  created.