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1. Highway System
Figure 2-89: U.S. DOT-FRA Crossing Inventory Form Part V, Item 1
Check the box for the correct highway system code. See Table 2-1 below for the
correct code.
Table 2-1: Highway System Codes
Code Definition Included
01 Interstate Highway System
Interstate, rural, and urban; (note
that the Interstate is part of the
National Highway System)
02 Other National Highway System
(NHS)
Other urban and rural principal
arterial, Non-Interstate
03 Federal Aid Highway, Not NHS
Rural major collector and higher
category, or urban collector and
higher category, not part of NHS
08 Non-Federal Aid
Local rural roads, rural minor
collectors, and local urban city
streets or any other non-FederalAid roadway
Highway-Rail Crossing Inventory Instruction and Procedures Manual
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Instructions for Completing the U.S. DOT Crossing Inventory Form
2. Functional Classification of Road at Crossing
Figure 2-90: U.S. DOT-FRA Crossing Inventory Form Part V, Item 2
Check the box for the appropriate highway functional classification code for “Rural” or
“Urban” and then check the box for the roadway type in accordance with Federal-aid
highway program definitions. The “Urban” designation is based on the U.S. Census
Bureau urban boundaries and a population of more than or equal to 5,000 people.
Functional classification is the grouping of highways, roads, and streets by the character
of service they provide and can be applied in planning highway system development. It
defines the part that any particular route should play in serving the flow of traffic through
a highway network. The details and definitions for classifying systems can be found on
FHWA's Web site at www.fhwa.dot.gov under “Guidelines for Functional Highway
Classification System.”
3. Is Crossing on State Highway System?
Figure 2-91: U.S. DOT-FRA Crossing Inventory Form Part V, Item 3
Check the appropriate box.
4. Highway Speed Limit
Figure 2-92: U.S. DOT-FRA Crossing Inventory Form Part V, Item 4
Enter the highway speed limit at the crossing in miles per hour (the speed limit value
must be greater than zero). Check the appropriate box to indicate whether the speed
limit is posted or statutory.
5. Linear Referencing System (LRS Route ID)
Figure 2-93: U.S. DOT-FRA Crossing Inventory Form Part V, Item 5
This is an optional field. Enter the “Linear Referencing System (LRS Route ID)” code.
The LRS is a set of procedures for determining and retaining a record of specific points
along a highway. Typical methods used are milepoint, milepost, reference point, and
link-node.
Highway-Rail Crossing Inventory Instruction and Procedures Manual
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Instructions for Completing the U.S. DOT Crossing Inventory Form
It is recommended that this field use the Highway Performance Monitoring System
(HPMS) data reported to FHWA. If a State uses more than one LRS for their own
purposes, it is recommended that the information entered match the HPMS data. The
details for the HPMS can be found on FHWA’s Web site at: http://www.fhwa.dot.gov
under Highway Performance Monitoring System.
6. LRS Milepost
Figure 2-94: U.S. DOT-FRA Crossing Inventory Form Part V, Item 6
This is an optional item. Enter the LRS milepost designation. Most at-grade highwayrail grade crossings are on highways without posted mileposts. Leave blank if none are
posted.
7. Annual Average Daily Traffic (AADT)
Figure 2-95: U.S. DOT-FRA Crossing Inventory Form Part V, Item 7
Enter the calendar year when the AADT was determined and the estimated AADT count
through the crossing (total both directions) based on available traffic information. When
a crossing runs diagonally through a highway-highway intersection, the total AADT
should include both streets in both directions.
“Annual Average Daily Traffic (AADT)” – a figure that represents the amount of vehicles
traveling past a known location on a roadway for a year, divided by 365 days. In the
event that 365 consecutive days of traffic counts are not available, there are traffic
engineering calculations that can be used to develop a representative figure for AADT
based upon traffic counts of shorter duration.
8. Estimated Percent Trucks
Figure 2-96: U.S. DOT-FRA Crossing Inventory Form Part V, Item 8
Enter the estimated percentage (0–99%) of trucks in the traffic stream. For the
purposes of this manual, trucks are considered as those vehicles having a
manufacturer’s gross vehicle weight (GVW) rating of 9,000 lbs. or more and having dual
tires on at least one rear axle. Also, buses, single-unit trucks, combination trucks, and
campers/recreational vehicles are classified as trucks. Do not include school buses.
Highway-Rail Crossing Inventory Instruction and Procedures Manual
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Instructions for Completing the U.S. DOT Crossing Inventory Form
9. Regularly Used by School Buses?
Figure 2-97: U.S. DOT-FRA Crossing Inventory Form Part V, Item 9
Check the “Yes” box if the crossing is regularly used by school buses. Check the “No”
box if the crossing is not regularly used by school buses. “Regularly” means that there
is at least one movement over the crossing, in either direction, by a school bus on a
normal school day.
If the “Yes” box is checked, enter the average total number of times that a school bus
crosses over the crossing, empty or full, on a normal school day. Back and forth
movements count as two passes through the crossing.
10. Emergency Services Route
Figure 2-98: U.S. DOT-FRA Crossing Inventory Form Part V, Item 10
Check the “Yes” box if the crossing is routinely used by highway vehicles to obtain
access to facilities that provide emergency services, such as hospitals and police and
fire stations. Otherwise check the “No” box.