92 Ill. Adm. Code 1535.300
Crossbuck Signs
Section 1535
Section 1535.300 Crossbuck
Signs
a) Every rail carrier shall furnish, erect and maintain at every
grade crossing on its line of railroad two crossbuck signs as set forth in
MUTCD Section 8B.03 and MUTCD Figure 8B-1, except at crossings where flashing
light signals or other warning devices incorporating a "crossbuck" as
part of their design are maintained and except at crossings within the cities
where train crews or watchmen provide warnings of all movements of cars or
engines thereover. At such excepted crossings, crossbuck signs may be installed
and maintained at the option of the rail carrier or may be required by specific
order of the Commission.
b) Crossbuck signs shall be so located with reference to local
conditions at each crossing as to provide proper visibility and in accordance with
good practice. One crossbuck sign shall be placed on each side of the track or
tracks preferably on the right hand side of the highway as viewed by a traveler
approaching the crossing. An additional crossbuck sign shall be installed in
accordance with MUTCD Section 8B.03 on the left side of the roadway where there
is restricted sight distance or unfavorable roadway geometry. The distance
from the crossbuck sign to the nearest track should be not less than 12 feet
from the centerline of track, measured perpendicular to the track, as set forth
in MUTCD Section 8B.03. This distance is to the center of the mast. The
distance from the crossbuck sign to the edge of the shoulder should not be less
than 6 feet or less than 12 feet from the crossbuck sign to the edge of the
traveled way (whichever is greater). Where there are curbs, the distance from
the crossbuck sign to the face of curb should not be less than 2 feet. These
distances are as set forth in MUTCD Section 8B.03 and are measured from the
nearest edge of the crossbuck sign. No crossbuck sign shall be permitted to be
obscured materially by trees or other obstructions located on the right of way
of the rail carrier.
c) The crossbuck signs referred to in Section 1535.300(a) shall
be the 4 foot reflectorized blade type, as set forth in MUTCD Section 8B.03,
each to be equipped with reflecting material to give an indication at night in
both directions along the highway except that where, for any reason, the rear
indication cannot be seen on any highway approaching the crossing, such rear
indication will not be required. The back of each blade shall have one or more
strips of retroreflective white material, the combined width of which shall not
be less than 2 inches for its full visible length. The rear indication may
also be obtained by placing two one way signs back to back. A strip of
retroreflective white material, not less than 2 inches in width, shall be used
on each crossbuck support for the full length of the front and back of the
support from the crossbuck sign or "Number of Tracks" sign to within
2 feet above the edge of the roadway, except on the side of those supports
where a STOP or YIELD sign or flashing lights have been installed or on the
back side of supports for crossbuck signs installed on one-way streets. On or
before January 17, 2011, the crossbucks at every highway-rail grade crossing in
the State of Illinois shall be equipped with retroreflective white material in
the manner set forth in this subsection and all crossbuck signs placed
thereafter shall be equipped with retroreflective white material in the manner
set forth in this Section. The height of the crossbuck above the surface of
the pavement or roadway may be varied to suit local conditions, but ordinarily
shall be such as will provide a clearance of approximately 7½ feet beneath the
crossbuck.