Dr. Lorraine D'Arcy:

Regarding housing development areas, we have had a series of sticking plasters to fix problems as they arise. We have built new developments in suburbs and peri-urban areas on the edge of towns. We built wider roads. As a result, people started driving faster. We then built ramps and people started to buy bigger cars with better suspension to counteract that and continued to speed. There has been a chicken-and-egg situation all along. We need to design for people rather than cars and to reallocate the space.