MAINTENANCE STANDARDS

• § 234.201 - Location of plans.

• § 234.203 - Control circuits.

• § 234.205 - Operating characteristics of warning system apparatus.

• § 234.207 - Adjustment, repair, or replacement of component.

• § 234.209 - Interference with normal functioning of system.

• § 234.211 - Security of warning system apparatus.

• § 234.213 - Grounds.

• § 234.215 - Standby power system.

• § 234.217 - Flashing light units.

• § 234.219 - Gate arm lights and light cable.

• § 234.221 - Lamp voltage.

• § 234.223 - Gate arm.

• § 234.225 - Activation of warning system.

• § 234.227 - Train detection apparatus.

• § 234.229 - Shunting sensitivity.

• § 234.231 - Fouling wires.

• § 234.233 - Rail joints.

• § 234.235 - Insulated rail joints.

• § 234.237 - Reverse switch cut-out circuit.

• § 234.239 - Tagging of wires and interference of wires or tags with signal apparatus.

• § 234.241 - Protection of insulated wire; splice in underground wire.

• § 234.243 - Wire on pole line and aerial cable.

• § 234.245 - Signs.

INSPECTIONS AND TESTS

• § 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.

REQUIREMENTS FOR PROCESSOR-BASED SYSTEMS

• § 234.275 - Processor-based systems.