Title 49--Transportation
CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
PART 236--RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, INSPECTION, MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES
|
|
| 236.0 |
Applicability, minimum requirements, and penalties. |
|
| 236.1 |
Plans, where kept. |
|
| 236.2 |
Grounds. |
|
| 236.3 |
Locking of signal apparatus housings. |
|
| 236.4 |
Interference with normal functioning of device. |
|
| 236.5 |
Design of control circuits on closed circuit principle. |
|
| 236.6 |
Hand-operated switch equipped with switch circuit controller. |
|
| 236.7 |
Circuit controller operated by switch-and-lock movement. |
|
| 236.8 |
Operating characteristics of electromagnetic, electronic, or electrical apparatus. |
|
| 236.9 |
Selection of circuits through indicating or annunciating instruments. |
|
| 236.10 |
Electric locks, force drop type; where required. |
|
| 236.11 |
Adjustment, repair, or replacement of component. |
|
| 236.12 |
Spring switch signal protection; where required. |
|
| 236.13 |
Spring switch; selection of signal control circuits through circuit controller. |
|
| 236.14 |
Spring switch signal protection; requirements. |
|
| 236.15 |
Timetable instructions. |
|
| 236.16 |
Electric lock, main track releasing circuit. |
|
| 236.17 |
Pipe for operating connections, requirements. |
|
| 236.18 |
Software management control plan. |
|
| 236.21 |
Location of roadway signals. |
|
| 236.22 |
Semaphore signal arm; clearance to other objects. |
|
| 236.23 |
Aspects and indications. |
|
| 236.24 |
Spacing of roadway signals. |
|
| 236.26 |
Buffing device, maintenance. |
|
| 236.51 |
Track circuit requirements. |
|
| 236.52 |
Relayed cut-section. |
|
| 236.53 |
Track circuit feed at grade crossing. |
|
| 236.54 |
Minimum length of track circuit. |
|
| 236.55 |
Dead section; maximum length. |
|
| 236.56 |
Shunting sensitivity. |
|
| 236.57 |
Shunt and fouling wires. |
|
| 236.58 |
Turnout, fouling section. |
|
| 236.59 |
Insulated rail joints. |
|
| 236.60 |
Switch shunting circuit; use restricted. |
|
| 236.71 |
Signal wires on pole line and aerial cable. |
|
| 236.73 |
Open-wire transmission line; clearance to other circuits. |
|
| 236.74 |
Protection of insulated wire; splice in underground wire. |
|
| 236.76 |
Tagging of wires and interference of wires or tags with signal apparatus. |
|
| 236.101 |
Purpose of inspection and tests; removal from service of relay or device failing to meet test requirements. |
|
| 236.102 |
Semaphore or searchlight signal mechanism. |
|
| 236.103 |
Switch circuit controller or point detector. |
|
| 236.104 |
Shunt fouling circuit. |
|
| 236.105 |
Electric lock. |
|
| 236.106 |
Relays. |
|
| 236.107 |
Ground tests. |
|
| 236.108 |
Insulation resistance tests, wires in trunking and cables. |
|
| 236.109 |
Time releases, timing relays and timing devices. |
|
| 236.110 |
Results of tests. |
|
| 236.201 |
Track-circuit control of signals. |
|
| 236.202 |
Signal governing movements over hand-operated switch. |
|
| 236.203 |
Hand operated crossover between main tracks; protection. |
|
| 236.204 |
Track signaled for movements in both directions, requirements. |
|
| 236.205 |
Signal control circuits; requirements. |
|
| 236.206 |
Battery or power supply with respect to relay; location. |
|
| 236.207 |
Electric lock on hand-operated switch; control. |
|
| 236.301 |
Where signals shall be provided. |
|
| 236.302 |
Track circuits and route locking. |
|
| 236.303 |
Control circuits for signals, selection through circuit controller operated by switch points or by switch locking mechanism. |
|
| 236.304 |
Mechanical locking or same protection effected by circuits. |
|
| 236.305 |
Approach or time locking. |
|
| 236.306 |
Facing point lock or switch-and-lock movement. |
|
| 236.307 |
Indication locking. |
|
| 236.308 |
Mechanical or electric locking or electric circuits; requisites. |
|
| 236.309 |
Loss of shunt protection; where required. |
|
| 236.310 |
Signal governing approach to home signal. |
|
| 236.311 |
Signal control circuits, selection through track relays or devices functioning as track relays and through signal mechanism contacts and time releases at automatic interlocking. |
|
| 236.312 |
Movable bridge, interlocking of signal appliances with bridge devices. |
|
| 236.314 |
Electric lock for hand-operated switch or derail. |
|
| 236.326 |
Mechanical locking removed or disarranged; requirement for permitting train movements through interlocking. |
|
| 236.327 |
Switch, movable-point frog or split-point derail. |
|
| 236.328 |
Plunger of facing-point lock. |
|
| 236.329 |
Bolt lock. |
|
| 236.330 |
Locking dog of switch-and-lock movement. |
|
| 236.334 |
Point detector. |
|
| 236.335 |
Dogs, stops and trunnions of mechanical locking. |
|
| 236.336 |
Locking bed. |
|
| 236.337 |
Locking faces of mechanical locking; fit. |
|
| 236.338 |
Mechanical locking required in accordance with locking sheet and dog chart. |
|
| 236.339 |
Mechanical locking, maintenance requirements. |
|
| 236.340 |
Electromechanical interlocking machine; locking between electrical and mechanical levers. |
|
| 236.341 |
Latch shoes, rocker links, and quadrants. |
|
| 236.342 |
Switch circuit controller. |
|
| 236.376 |
Mechanical locking. |
|
| 236.377 |
Approach locking. |
|
| 236.378 |
Time locking. |
|
| 236.379 |
Route locking. |
|
| 236.380 |
Indication locking. |
|
| 236.381 |
Traffic locking. |
|
| 236.382 |
Switch obstruction test. |
|
| 236.383 |
Valve locks, valves, and valve magnets. |
|
| 236.384 |
Cross protection. |
|
| 236.386 |
Restoring feature on power switches. |
|
| 236.387 |
Movable bridge locking. |
|
| 236.401 |
Automatic block signal system and interlocking standards applicable to traffic control systems. |
|
| 236.402 |
Signals controlled by track circuits and control operator. |
|
| 236.403 |
Signals at controlled point. |
|
| 236.404 |
Signals at adjacent control points. |
|
| 236.405 |
Track signaled for movements in both directions, change of direction of traffic. |
|
| 236.407 |
Approach or time locking; where required. |
|
| 236.408 |
Route locking. |
|
| 236.410 |
Locking, hand-operated switch; requirements. |
|
| 236.426 |
Interlocking rules and instructions applicable to traffic control systems. |
|
| 236.476 |
Interlocking inspections and tests applicable to traffic control systems. |
|
| 236.501 |
Forestalling device and speed control. |
|
| 236.502 |
Automatic brake application, initiation by restrictive block conditions stopping distance in advance. |
|
| 236.503 |
Automatic brake application; initiation when predetermined rate of speed exceeded. |
|
| 236.504 |
Operation interconnected with automatic block-signal system. |
|
| 236.505 |
Proper operative relation between parts along roadway and parts on locomotive. |
|
| 236.506 |
Release of brakes after automatic application. |
|
| 236.507 |
Brake application; full service. |
|
| 236.508 |
Interference with application of brakes by means of brake valve. |
|
| 236.509 |
Two or more locomotives coupled. |
|
| 236.511 |
Cab signals controlled in accordance with block conditions stopping distance in advance. |
|
| 236.512 |
Cab signal indication when locomotive enters block where restrictive conditions obtain. |
|
| 236.513 |
Audible indicator. |
|
| 236.514 |
Interconnection of cab signal system with roadway signal system. |
|
| 236.515 |
Visibility of cab signals. |
|
| 236.516 |
Power supply. |
|
| 236.526 |
Roadway element not functioning properly. |
|
| 236.527 |
Roadway element insulation resistance. |
|
| 236.528 |
Restrictive condition resulting from open hand-operated switch; requirement. |
|
| 236.529 |
Roadway element inductor; height and distance from rail. |
|
| 236.531 |
Trip arm; height and distance from rail. |
|
| 236.532 |
Strap iron inductor; use restricted. |
|
| 236.534 |
Entrance to equipped territory; requirements. |
|
| 236.551 |
Power supply voltage; requirement. |
|
| 236.552 |
Insulation resistance; requirement. |
|
| 236.553 |
Seal, where required. |
|
| 236.554 |
Rate of pressure reduction; equalizing reservoir or brake pipe. |
|
| 236.555 |
Repaired or rewound receiver coil. |
|
| 236.556 |
Adjustment of relay. |
|
| 236.557 |
Receiver; location with respect to rail. |
|
| 236.560 |
Contact element, mechanical trip type; location with respect to rail. |
|
| 236.562 |
Minimum rail current required. |
|
| 236.563 |
Delay time. |
|
| 236.564 |
Acknowledging time. |
|
| 236.565 |
Provision made for preventing operation of pneumatic brake-applying apparatus by double-heading cock; requirement. |
|
| 236.566 |
Locomotive of each train operating in train stop, train control or cab signal territory; equipped. |
|
| 236.567 |
Restrictions imposed when device fails and/or is cut out en route. |
|
| 236.568 |
Difference between speeds authorized by roadway signal and cab signal; action required. |
|
| 236.576 |
Roadway element. |
|
| 236.577 |
Test, acknowledgement, and cut-in circuits. |
|
| 236.586 |
Daily or after trip test. |
|
| 236.587 |
Departure test. |
|
| 236.588 |
Periodic test. |
|
| 236.589 |
Relays. |
|
| 236.590 |
Pneumatic apparatus. |
|
| 236.601 |
Signals controlled by devices; location. |
|
| 236.700 |
Definitions. |
|
| 236.701 |
Application, brake; full service. |
|
| 236.702 |
Arm, semaphore. |
|
| 236.703 |
Aspect. |
|
| 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. |
|
| 236.717 |
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. |
|
| 236.749 |
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. |
|
| 236.782 |
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. |
|
| 236.901 |
Purpose and scope. |
|
| 236.903 |
Definitions. |
|
| 236.905 |
Railroad Safety Program Plan (RSPP). |
|
| 236.907 |
Product Safety Plan (PSP). |
|
| 236.909 |
Minimum performance standard. |
|
| 236.911 |
Exclusions. |
|
| 236.913 |
Filing and approval of PSPs.
|
|
| 236.915 |
Implementation and operation. |
|
| 236.917 |
Retention of records. |
|
| 236.919 |
Operations and Maintenance Manual. |
|
| 236.921 |
Training and qualification program, general. |
|
| 236.923 |
Task analysis and basic requirements. |
|
| 236.925 |
Training specific to control office personnel. |
|
| 236.927 |
Training specific to locomotive engineers and other operating personnel. |
|
| 236.929 |
Training specific to roadway workers. |