File:Chicago Board of Trade Building (5994066093).jpg

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Chicago_Board_of_Trade_Building_(5994066093).jpg ‎(192 × 374 pixels, file size: 33 KB, MIME type: image/jpeg)

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Train wheels wear just as car tyres do and they need to be checked regularly. When the wear reaches certain limits, the treads either have to be reprofiled to the correct shape or the wheels replaced. Reprofiling wheels is a slow and expensive process but train and wheel design and maintenance has improved considerably over recent years, reducing the periods between visits for reprofiling. Even so, there are still persistent cases of railways running into unforeseen or unusual wheel wear problems and the wheel/rail interface still needs a lot more research before it is fully understood. I captured this scene at a BNSF / Metra maintenance yard in Chicago not to far from union station..

This Image also appears in 'Amtrak train Routes'
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Metra Chicago

Author Loco Steve from Orpington, UK
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Camera location41° 51′ 56.51″ N, 87° 38′ 19.88″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current20:14, 25 September 2016Thumbnail for version as of 20:14, 25 September 2016192 × 374 (33 KB)SecretName101 (talk | contribs)File:Metra Chicago (5994066093).jpg cropped 93 % horizontally and 78 % vertically using CropTool with lossless mode.

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