News flash
4th February 1977, Page 39
4th February 1977
Page 39
Page 39, 4th February 1977
— News flash
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And by the way, here's a point for urban transport planners to note. Where traffic lights have been installed in urban areas there has usually been a sharp rise in pollution. So put them on a flashing basis during the hours when it's not essential for the colours to alternate.