Sep 07, 2015 · Posted On September 7, 2015. Cats eyes are set to be replaced on Britain’s roads by new solar powered LED lights. Long-standing traffic legislation is set to be rewritten to pave the way for the new ‘active studs’, which can shine for up to 10 days with just four hours of charge. The LEDs can be seen from as far away as 1,000 yards, which