E
Eagle-Eye	Locomotive engineer.
Earth	Electrical connection to complete a circuit. Also called Ground.
Easy Sign	Signal indicating the train is to move slowly.
EDI	An acronym for Electronic Data Interchange; involves the exchange via computer of information among carriers and between carriers and customers.
Effective Securing Device	A device applied to secure a manually operated switch or derail for the protection of Roadway Workers. The device must be vandal and tamper resistant, and designed to be applied, secured, uniquely tagged, and removed only by the class, group, or class of employees for whom the protection is provided.
Electric Owl	Night operator.
Electric Switch Lock	An electrically controlled lock device affixed to a hand operated switch or derail to control it's use.
Elephant Car	Special car coupled behind locomotive to accommodate head brakeman.
Embankment	Ridge of earth or rock to raise the natural ground level.
Emergency Application	An application resulting from an emergency rate of brake pipe reduction which causes the brakes to apply quickly and with maximum braking force for the shortest practical stopping distance.
Emergency Stop	Lock up all wheels.
End Man	Rear brakeman on freight train.
End Of Train Telemetry Device	(ETD) A system of components that determines the rear car brake pipe pressure and transmits that information to the display on the head-of-train telemetry device (HTD).
End-to-End	Model layout consisting of a length of track with a terminal at each end. Point-to-Point.
Engine	A unit or combination of units propelled by any form of energy, and operated from a single control, used in train or yard service. The word "engine" may also be used to identify control cars.
Engine Servicing Track Area	One or more tracks within an area in which the testing, servicing, repairing, inspecting, or rebuilding of engines is under the exclusive control of mechanical department personnel.
Engine Yard	The yard in which engines are stored and serviced.
Engineer	(Engr) The member of the crew designated and qualified to operate a train over the territory to be traversed.
Enginehouse	A building in which locomotives are serviced.
Enroutes	Count of trains destined to a particular yard or terminal that need to be switched. "Strong enroutes" indicates a forecast for a heavy switching workload for that day.
EOT Device	An end-of-train device (sometimes called a FRED, or flashing rear- end device) that has replaced cabooses. Along with a flashing light, many EOTs can transmit information on brake-line pressure and speed to the locomotive, while a two way EOT is also capable of receiving a transmission from the lead unit to open the brake pipe and put the train into emergency stop.
Epoxy	A two part adhesive consisting of the resin and the hardener. A good choice for securing nonporous surfaces such as metal, glass, and some plastics.
Exhaust Pipe	A vertical pipe attached to the cylinder casing of a steam locomotive inside the smoke box in line with the smoke stack. It carries away the exhausted steam and the combustion products from the cylinders, producing a partial vacuum on the smoke box and draft on the fire.
Extra	Any extra train that is not shown on schedules. It operates on train orders.
Extra Board	A list of employees who may be assigned to train crews (1) when extra trains are run, (2) when regular crews have not had sufficient rest time before they can legally be required to return to duty, or (3) when relief men are required on regular crews.
Extended Range Dynamic Braking	An optional high-amperage system that allows dynamic braking down to lower speeds than the standard system (below 15 mph).
Extra Gang	The crew of track laborers assigned to maintenance work at various points on a railroad right-of-way. These employees may live in camp (bunk) cars where they are provided lodging and meals at a nominal cost.
Eye	Trackside signal.