i sometimes time use hand signals as an extra,,i live and ride in mostly a hinterland area,,if im turning off somewhere and a car has been behind me for a while ill flick on the electric indicator and if my gut feels its in order ill make a proper obvious hand/arm signal,lots of drivers once in the country think the rat race race is behind them and let their guard and observation go down,i hope it also reminds them of days gone by when hand signals were part of manners almost,sadly these days the most hand signals i see are the bird(middle finger even when the giver is at fault!).i like the big factory signals.