What is the new trend with red light cameras?

Answer: their use is declining

For the first time since their inception, the use of red light cameras is in decline in the U.S.

The Modesto, Calif., City Council, for instance, unanimously approved installing cameras in up to 10 intersections in 2004. Now,  however, Mayor Garrad Marsh seems to have turned on the technology, saying that it doesn't raise very much money for the city and doesn't stop the kind of dangerous behavior the city had hoped it would.

And according to an Ars Technica article, some studies support the mayor's findings, reporting that legislators across the country are "increasingly agitated about the cameras," and bills are pending in two states -- Florida and Ohio -- that would ban the devices entirely.