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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 |
47 |
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 |
48 |
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 |
49 |
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. |
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