Unmanned Aerial Vehicles (UAV, aka, drones) are becoming an important tool in railroad engineering and maintenance. Keolis Commuter Services, which operates regional/commuter rail for the Massachusetts Bay Transportation Authority, is among the latest to adopt the technology.
Why use drones? For Keolis in the greater Boston area, the region is packed with dense forests. In 2015, there were six collisions with fallen trees and 319 trains encountered slippery conditions due to fallen leaves over a 69-day span. A drone equipped with a high-resolution camera and providing a live data feed can scan a right-of-way for these problems much faster than an inspector in a hi-rail vehicle. A drone can also collect data to inspect inaccessible areas on bridges and buildings.
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