Sec. 557.110 - Definitions

ยง 557.110. Definitions

The following words or phrases when used in this Part shall have the meanings ascribed to them below.

"Active Protection" - Any protection device that is designed to be actuated by the approach of an oncoming train (including lights, bells and gates) or protection by a crossing guard.

"Crossbucks Only" - Protection provided only by an "X" shaped sign mounted on a post at a rail-highway crossing inscribed with the words "Railroad" on one panel and "Crossing" on the other.

"Curb" - A vertical or sloping barrier along a roadway at least four inches high, clearly defining the edge of a roadway.

"Department" - The Illinois Department of Transportation, acting through its District Engineers.

"Roadway" - The portion of a road, street or highway on which vehicles travel, consisting of the pavement surface, exclusive of the shoulders.

"School Code" - 105 ILCS 5/29-5.2.

"Shoulder" - The relatively flat area between the outer edge of a roadway with no curb and the point where the earth begins sloping either upward or downward, intended for the accommodation of stopped vehicles or for emergency use.

"Speed of Traffic" - The speed of traffic shall be based on the posted speed limit. In special school speed zones as authorized by Section 11-605 of the Illinois Vehicle Code [625 ILCS 5/11-605], the speed limit that is in force when the special school speed zone is not in effect shall be used. If speed limit signs are not present, the speed of traffic shall be considered to be 30 miles per hour in an urban area and 55 miles per hour in a rural area.

"Volume of Traffic" - The volume of traffic shall be classified as light, moderate or heavy on the basis of a five minute vehicular traffic count during either the morning or afternoon crossing period. The morning afternoon crossing period is that time of day when pupils are crossing or passing through hazardous locations. Volume of traffic shall be classified through the use of the following:



(1 OR 2 WAY)




More than 40 vehicles

More than 60 vehicles


20-40 vehicles

40-60 vehicles


Less than 20 vehicles

Less than 40 vehicles


Amended at 25 Ill. Reg. 16534, effective December 18, 2001


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