Heavitree Active Streets Illustration (Image courtesy: Devon County Council) Controversial road changes in Heavitree and Whipton underway A controversial trial of road changes in Heavitree and Whipton, which aims to improve conditions for pedestrians and cyclists, is underway. A number of bollards and planters – or what the council calls ‘modal filters’ – together with gates to allow buses through are being installed to block off some roads to reduce through-traffic and boost cycling and walking.