bill in North Dakota that would outlaw the use of devices that can change some
traffic signals from red to green from as far as 1,500 feet has been signed
into law by Gov. John Hoeven.
changers are designed to allow police, fire and other emergency officials to
clear intersections before they approach. But some drivers have managed to
purchase them on the Internet for less than a couple of hundred dollars.
can even buy kits and build the signal changers themselves.
new law, previously HB1096, is intended to deter anyone other than public
safety and transit agencies from using so-called mobile infrared transmitters,
or MIRTs. House and Senate lawmakers previously approved the measure by unanimous
devices, which sit on a vehicle’s dash, are not regulated by current federal
standards because they rely on a beam of light instead of a radio wave to
trigger the light-changing mechanisms that have been attached to some
a signal changer on a traffic light detects an approaching emergency vehicle
equipped with the device, the light responds accordingly. If the light is red,
the signal changer will immediately give vehicles in other directions a yellow
light, followed by a red light. The emergency vehicle will get a green light
until it passes through the intersection.
light-changing mechanisms have been in use at intersections since the early