The national master plans for cycling and walking aim to achieve a significant increase in active mobility by 2030. A key challenge is to determine whether safe pedestrian and cycle routes exist along the higher-priority road network, or whether they can be replaced by suitable alternative routes. However, there is currently no standardised, comprehensive assessment method that can be used to systematically determine where main roads are adequately served by pedestrian and cycle facilities and where there are infrastructure deficits or gaps in accessibility.