49 CFR Topic
Inspections and Tests
November 18, 2020
§
234.247
Purpose of inspections and tests; removal from service of relay or device failing to meet test requirements
§
234.249
Ground tests
§
234.251
Standby power
§
234.253
Flashing light units and lamp voltage
§
234.255
Gate arm and gate mechanism
§
234.257
Warning system operation
§
234.259
Warning time
§
234.261
Highway traffic signal pre-emption
§
234.263
Relays
§
234.265
Timing relays and timing devices
§
234.267
Insulation resistance tests, wires in trunking and cables
§
234.269
Cut-out circuits
§
234.271
Insulated rail joints, bond wires, and track connections
§
234.273
Results of inspections and tests
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