Sure, if we're talking about some kind of complicated physics and structural calculations, with lots of technical jargon - yes, involve the engineers. But we'r

Sure, if we're talking about some kind of complicated physics and structural calculations, with lots of technical jargon - yes, involve the engineers. But we're talking about some simple math for counting the length of traffic lights. Everybody uses traffic lights, everybody knows simple math. It is ridiculous to assert that you need a technical qualification to know it's wrong that red light cameras flash at 100 seconds, but the light changes at 110 seconds.