49 CFR Subpart G
Definitions
November 18, 2020
§
236.700
Definitions
§
236.701
Application, brake; full service
§
236.702
Arm, semaphore
§
236.703
Aspect
§
236.704
[Reserved]
§
236.705
Bar, locking
§
236.706
Bed, locking
§
236.707
Blade, semaphore
§
236.708
Block
§
236.709
Block, absolute
§
236.710
Block, latch
§
236.711
Bond, rail joint
§
236.712
Brake pipe
§
236.713
Bridge, movable
§
236.714
Cab
§
§236.715-236.716
[Reserved]
§
236.717
Characteristics, operating
§
236.718
Chart, dog
§
236.719
Circuit, acknowledgment
§
236.720
Circuit, common return
§
236.721
Circuit, control
§
236.722
Circuit, cut-in
§
236.723
Circuit, double wire; line
§
236.724
Circuit, shunt fouling
§
236.725
Circuit, switch shunting
§
236.726
Circuit, track
§
236.727
Circuit, track; coded
§
236.728
Circuit, trap
§
236.729
Cock, double heading
§
236.730
Coil, receiver
§
236.731
Controller, circuit
§
236.732
Controller, circuit; switch
§
236.733
Current, foreign
§
236.734
Current of traffic
§
236.735
Current, leakage
§
236.736
Cut-section
§
236.737
Cut-section, relayed
§
236.738
Detector, point
§
236.739
Device, acknowledging
§
236.740
Device, reset
§
236.741
Distance, stopping
§
236.742
Dog, locking
§
236.743
Dog, swing
§
236.744
Element, roadway
§
236.745
Face, locking
§
236.746
Feature, restoring
§
236.747
Forestall
§
236.748
[Reserved]
§
236.749
Indication
§
236.750
Interlocking, automatic
§
236.751
Interlocking, manual
§
236.752
Joint, rail, insulated
§
236.753
Limits, interlocking
§
236.754
Line, open wire
§
236.755
Link, rocker
§
236.756
Lock, bolt
§
236.757
Lock, electric
§
236.758
Lock, electric, forced drop
§
236.759
Lock, facing point
§
236.760
Locking, approach
§
236.761
Locking, electric
§
236.762
Locking, indication
§
236.763
Locking, latch operated
§
236.764
Locking, lever operated
§
236.765
Locking, mechanical
§
236.766
Locking, movable bridge
§
236.767
Locking, route
§
236.768
Locking, time
§
236.769
Locking, traffic
§
236.770
Locomotive
§
236.771
Machine, control
§
236.772
Machine, interlocking
§
236.773
Movements, conflicting
§
236.774
Movement, facing
§
236.775
Movement, switch-and-lock
§
236.776
Movement, trailing
§
236.777
Operator, control
§
236.778
Piece, driving
§
236.779
Plate, top
§
236.780
Plunger, facing point lock
§
236.781
[Reserved]
§
236.782
Point, controlled
§
236.783
Point, stop-indication
§
236.784
Position, deenergized
§
236.785
Position, false restrictive
§
236.786
Principle, closed circuit
§
236.787
Protection, cross
§
236.787a
Railroad
§
236.788
Receiver
§
236.789
Relay, timing
§
236.790
Release, time
§
236.791
Release, value
§
236.792
Reservoir, equalizing
§
236.793
Rod, lock
§
236.794
Rod, up-and-down
§
236.795
Route
§
236.796
Routes, conflicting
§
236.797
Route, interlocked
§
236.798
Section, dead
§
236.799
Section, fouling
§
236.800
Sheet, locking
§
236.801
Shoe, latch
§
236.802
Shunt
§
236.802a
Siding
§
236.803
Signal, approach
§
236.804
Signal, block
§
236.805
Signal, cab
§
236.806
Signal, home
§
236.807
Signal, interlocking
§
236.808
Signals, opposing
§
236.809
Signal, slotted mechanical
§
236.810
Spectacle, semaphore arm
§
236.811
Speed, medium
§
236.812
Speed, restricted
§
236.813
Speed, slow
§
236.813a
State, most restrictive
§
236.814
Station, control
§
236.815
Stop
§
236.816
Superiority of trains
§
236.817
Switch, electro-pneumatic
§
236.818
Switch, facing point
§
236.819
Switch, hand operated
§
236.820
Switch, interlocked
§
236.820a
Switch, power-operated
§
236.821
Switch, sectionalizing
§
236.822
Switch, spring
§
236.823
Switch, trailing point
§
236.824
System, automatic block signal
§
236.825
System, automatic train control
§
236.826
System, automatic train stop
§
236.827
System, block signal
§
236.828
System, traffic control
§
236.829
Terminal, initial
§
236.830
Time, acknowledging
§
236.831
Time, delay
§
236.831a
Track, main
§
236.832
Train
§
236.833
Train, opposing
§
236.834
Trip
§
236.835
Trunking
§
236.836
Trunnion
§
236.837
Valve, electro-pneumatic
§
236.838
Wire, shunt
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