Some contracts restrict police from doing things like lengthening the yellow signal [Lengthening a yellow light by 1 sec. can reduce accidents up to 40%] and leave taxpayers holding the bag if the contracts are terminated early, says the report from the U.S. Public Interest Research Group, the federation of state public interest research groups.
"The most problematic contracts require cities to share revenue with the camera vendor on a per-ticket basis or through other formulas as a percentage of revenue," the group says. [This is what happens in Wilmington]
[...]"In 2011, camera vendors employed nearly 40 lobbyists in Florida, whose agenda included killing a bill that would have required municipalities to adopt longer yellow-light times to increase intersection safety," the report says.