National Highway 37 (NH-37) connects northeastern Assam to the rest of India, providing passage for an average of 5,500 vehicles per day. For 60 km, NH-37 stretches along the southern border of Kaziranga National Park, one of India’s most biodiverse and important PAs. Kaziranga National Park provides habitat for Bengal tigers, Asian elephants, and two-thirds of the world’s one-horned rhinoceroses, as well as a diverse array of smaller mammals, reptiles, amphibians, and birds.

To better understand the impacts of the road on wildlife, researchers recorded observations of wildlife roadkills and live crossings along NH-37 from November 2018 to March 2020. Every observation was classified within three main categories: (1) monsoon (June–September) vs. dry season (October–May), (2) taxonomic type (meso-carnivore, herptile, primate, bird, ungulate, other mammal), and (3) animal status (dead, live near road, live crossing road). This app can be used to filter the data along these categories and identify hotspots.