3rd and 4th rail dimensions and settings
Metro-North's 3rd rail was designed for safety
Third rail - Wikipedia
Third Rail
Third Rail' Is a Focus of Inquiry in Metro-North Crash - WSJ
Third rail - Wikipedia
File:Third rail contact shoe (description).jpg - Wikimedia Commons
If Only Singaporeans Stopped to Think: MRT breakdown COI: Day 11
Shoegear Wear measurement system
Third-Rail Current Collectors | Schunk Transit Systems
Third-rail current collectors - YouTube
File:Third rail pickup.jpg - Wikimedia Commons
File:Third rail contact shoe with SM.JPG - Wikimedia Commons
PC0001a Zoom on third rail pickup shoe gear of FL9 No. 503… | Flickr
Current collecting shoegear system and third rail interactions | Ashkan H. Hosseinloo
DTK - Railway Technology
Third Rail and 3rd Rail System Details
Electric Traction Power | The Railway Technical Website | PRC Rail Consulting Ltd
Morgan Third and Fourth Rail Collector Shoes
Electric Traction Power | The Railway Technical Website | PRC Rail Consulting Ltd
Modeling Outside Third Rail
File:Third rail shoe on M8 railcar, September 2018.JPG - Wikimedia Commons
Third rail - Wikipedia
Current Collectors | Wabtec Corporation
Current collection device (3rd rail) shoes - Mersen Power Transfer Technologies - PDF Catalogs | Technical Documentation | Brochure
