Complex sentence: Traffic calming consists of engineering and other measures put in place on roads for the intention of slowing down or reducing motor-vehicle traffic and thereby improving the living conditions for residents living along the road as well as to improve safety for pedestrians and cyclists.
Split into simpler sentences: Traffic calming consists of engineering and other measures put in place on roads for the intention of slowing down or reducing motor-vehicle traffic. This is done in order to improve the living conditions for residents living along the road as well as to improve safety for pedestrians and cyclists.