Examine the role of linear infrastructure in increasing human–wildlife conflict and suggest design-based solutions for wildlife-friendly development.

Roads, railways, power lines and canals are called linear infrastructure because they run in long lines across the land. When they pass through forests, they cut continuous habitat into fragments. They are not the only cause of human–wildlife conflict, but they make it much worse. In Assam alone, human–elephant conflict killed 1,147 people and 246 elephants between 2016 and July 2026 [1]. Design-led planning is therefore central to India's infrastructure growth.

How linear infrastructure increases conflict

• Barrier effect and fragmentation: highways and railway tracks cut through migratory routes and corridors. This splits animal populations and forces them to cross at unsafe points [2].
• Direct deaths: trains and vehicles kill elephants, big cats and ungulates. Repeated elephant–train collisions pushed the Northeast Frontier Railway to adopt AI-based alerts [3].
• Animals pushed into villages: when movement is blocked, herds turn to farms and plantations. GPS-collared elephants in Assam's Udalguri, Sonitpur and Biswanath districts moved through tea estates, farmland and riverine land, not only forests [1].
• Edge and access effects: roads open forests to settlement, encroachment and poaching. This increases contact between people and animals.
• Power lines and canals: low-hanging lines electrocute animals, and steep-sided canals trap or drown them [2].

Design-based solutions

• Avoid first, then mitigate: move alignments away from Protected Areas and corridors at the planning stage. Movement data from telemetry studies can guide this [1][2].
• Crossing structures: underpasses, overpasses, elevated viaducts and canopy bridges, each sized for the target species [2].
• Funnel fencing: fences that guide animals towards crossings instead of only blocking them [2].
• Technology: an AI-enabled Intrusion Detection System uses fibre-optic acoustic sensors to detect elephants near the track. It covers 141 route-km of the Northeast Frontier Railway and alerts loco pilots and station masters [3].
• Operational measures: speed limits in corridors, signs, rumble strips and noise barriers [2].
• Power lines: insulated or underground cables, with enough height above the ground [2].
• Institutional measures: joint inspections by the forest, railway and highway departments. MoEFCC's guidelines on managing human–elephant conflict set out a framework for coordinated response [4].

Linear infrastructure turns habitat loss into daily encounters between people and wildlife, but good design can make it a tool for coexistence. Wildlife-friendly guidelines should be built into Environmental Impact Assessments and detailed project reports, backed by animal-movement data. This would reconcile fast infrastructure growth with Article 48A and SDG 15 (Life on Land).