According to the ecological infrastructure initiative by the National Highways Authority of India, flowering tree clusters under the Bee Corridor initiative will generally be planted at what distance interval along highways?

Under the Bee Corridor initiative, flowering tree clusters will be planted at intervals of 500 metres to 1 kilometre along national highways. This spacing corresponds with the average foraging distance of honeybees. The plantations will include nectar-rich and pollen-rich plant species that provide a continuous food source for pollinators. The corridor concept ensures that pollinators can travel along highway landscapes while accessing flowering plants. This structured planting strategy supports pollination services, biodiversity conservation, and ecological balance in areas surrounding highways.