[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR236.14]

[Page 491-492]
 
                        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--Table of Contents
 
             Subpart A--Rules and Instructions: All Systems
 
Sec. 236.14  Spring switch signal protection; requirements.

    (a) The indication of signal governing movements from siding to main 
track with the current of traffic on track signaled for movements in 
only one direction through a spring switch in automatic block signal 
territory shall be not less restrictive than ``Proceed at Restricted 
Speed' when the block, into which movements are governed by the signal, 
is occupied, and shall be ``Stop'' when the main track is occupied by a 
train approaching the switch within at least 1,500 feet in approach of 
the approach signal located stopping distance from the main track signal 
governing trailing movements over switch, except that the indication may 
be caused to be less restrictive if approach or time locking is used.
    (b) The indication of signal governing movements against the current 
of traffic from the reverse main of main tracks to a single track, or 
signal governing movements from a siding to a main track signaled for 
movements in either direction, through a spring switch, in automatic 
block signal territory, shall be not less restrictive than ``Proceed at 
Restricted Speed'' when the block, into which movements are governed by 
the signal, is occupied by a preceding train, and shall be ``Stop'' when 
the block on the single track into which the signal governs is occupied 
by an opposing train.
    (c) The indication of signal governing movements against the current 
of traffic from the reverse main of main tracks to a single track or 
signal governing movements from a siding to a main track signaled for 
movements in either direction through a spring switch in automatic block 
signal territory shall be ``Stop'' when the normal direction main track 
of the double track or the single track signaled for movements in both 
directions is occupied by a train approaching the switch within at least 
1,500 feet in approach of the approach signal located stopping distance 
from the main track signal governing trailing movements over

[[Page 492]]

switch, except that indication may be caused to be less restrictive if 
approach or time locking is used.