I saw a telly thing about this effect
the lights might be programmed to keep traffic moving at 30mph, wait for one set to go green then drive at exactly 30mph and you'll only hit green lights
( Gilgamesh gazed in wonder as Frampton came alive, Fri 3 Jul 2009, 17:09, archived)

Yeah, that's never going to happen over here
a year back a motor journalist killed his friend whilst driving a borrowed ferrari. He drove through some road works, hit a bump, and ploughed into a flyover support at 150kph, in the middle of the city.

There was public outcry. "YOU SEE, MAYOR? THIS IS WHAT HAPPENS IF YOU DON'T REPAIR THE ROADS ON TIME!"
( Grrrmachine the indifference engine, Fri 3 Jul 2009, 17:17, archived)

I remember making a train journey from Olkusz to Krakow that passed a cenetery where some building work was going on nearby
on one of the piles of rubble was a recently-excavated human foot

classy
( Gilgamesh gazed in wonder as Frampton came alive, Fri 3 Jul 2009, 17:23, archived)