A recent letter writer claimed that shutting down the school-zone speed cameras endangers children ["Speed camera shut-down unwise, May 27]. However, I have yet to see statistics on how many children were injured in the pre-speed camera period.

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The placement of crossing guards is a much more effective deterrent than speed cameras. Of course, placing crossing guards doesn't produce revenue, which I believe was the chief motivation for the speed cameras.

Bob Boos, Plainview