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National College Credit Recommendation Service

Board of Regents  |  University of the State of New York

Transportation Learning Center | Evaluated Learning Experience

1. Introduction and Overview to Interlockings (106)

2. Inspection and Maintenance of Interlockings (206)
3. Troubleshooting and Repair of Interlockings (306)

Course 1, 2 and 3 (combined): 24 hours. 

Transportation Learning Center, Silver Spring, Maryland, and approved locations.

Course 1, 2 and 3: April 2013 - May 2023. 

Instructional delivery format: 
Traditional classroom model
Learner Outcomes: 

Course 1, 2 and 3: Upon successful completion of the course, students will be able to: define basic interlocking terminology and describe theory of operation and purpose of interlockings; identify the applicable FRA and agency-specific standards related to interlockings and safety guidelines; list nomenclature specific to interlockings; explain basic routing processing; evaluate types of locking circuits and their functions; differentiate between signal and universal interlockings, and inspect and maintain interlockings.


Course 1, 2 and 3: Instruction is offered via classroom through use of study guides, required and supplemental readings, quizzes, lab, required interaction with instructor, and final exams. Topics include: signal control circuits, interlockings, routing processing, and inspection, maintenance and repair of interlockings. 

Credit recommendation: 

Course 1, 2 and 3: In the lower division baccalaureate/associate degree category, 1 semester hour in Railroad Operations, Railroad Electronics, Railroad Engineering, Transportation Management, and Mechanical Systems (5/18). NOTE: Course 1, 2 and 3 must all be completed to receive credit.