Attention drawn to “red light cameras” has a broadened focus in Dallas. Some “Big D” traffic signals – designed to be effective for 25 years – have been in service since 1940, with almost all in use since 1980. If tell-tale cameras had been that old, there’d have been black-hooded photographers straddling elevated supports trying to apply matches to magnesium at precisely the right moment to provide lighting for incriminating photos of lawbreakers. Governor Greg Abbott closed the shutter on such traffic surveillance with one stroke of the pen recently. Now, arguments may be underway far and wide concerning payment, since municipalities ...