REFERENCE_POST
Go to Section:- Overview
- Data Quality
- Data Organization
- Coordinate System
- Attributes
- Distribution - Get Data
- Metadata Reference
Section 1: Overview
Originator:Minnesota Department of Transportation
Title:
REFERENCE_POST
Abstract:
Reference posts (often called Mile Post or Mile Markers) are green numbered signs along the side of a highway roughly a mile apart for traveler reference.
Purpose:
To create a spatial representation for mapping the location for Reference Posts.
Time Period of Content Date:
2020-12-31
Currentness Reference:
Data is complete through end of construction for date referenced. Construction subsequent to said date is in process to being entered and may or may not be included.
Progress:
Complete
Maintenance and Update Frequency:
Continually
Spatial Extent of Data:
State of Minnesota
Bounding Coordinates:
-97.508970
-89.028990
49.652543
43.192405
Place Keywords:
Minnesota
Theme Keywords:
Linear Referencing System, LRS, Reference Post, Reference Point, Mile Marker, Mile, Post, route, and roads
Theme Keyword Thesaurus:
ISO 19115 Topic Category
Access Constraints:
None.
Use Constraints:
By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party or the public unless the user shall include with the data a copy of the disclaimer. The disclaimer can be found in Section 6 of this document (Distribution Liability).
Contact Person Information:
Peter Morey,
Roadway Data and Support Section Director
Minnesota Department of Transportation
395 John Ireland Blvd.
Saint Paul,
MN
55155
Phone: 651-366-3872
Fax: 651-366-3886
Email: linearreferencingsystem.admin.dot@state.mn.us
Browse Graphic:
None available
Associated Data Sets:
Section 2: Data Quality
Attribute Accuracy:
Logical Consistency:
Completeness:
Horizontal Positional Accuracy:
Location accuracy for features derived from USGS 7.5-minute quadrangles cannot be assumed to exceed National Map Accuracy Standards for 1:24,000 scale maps (+/- 40 feet or 12 meters). Accuracy of updates based on imagery is dependent on the resolution of the imagery used. Imagery used for updates would represent the best imagery available at the time of the update.
Vertical Positional Accuracy:
N/A
Lineage:
Originally coded in the legacy Transportation Information System (TIS) and migrated into the new Linear Referencing System (LRS). Data created from local authority notes, review of online data sources, construction plans and video log.
Section 3: Spatial Data Organization (not used in this metadata)
Section 4: Coordinate System
Horizontal Coordinate Scheme:
Universal Transverse Mercator
UTM Zone Number:
15
Horizontal Datum:
NAD83
Horizontal Units:
meters
Vertical Datum:
Vertical Units:
Depth Datum:
Depth Units:
Section 5: Attributes
Overview:
Detailed Citation:
Table Detail:
Reference Post NM| Field Name | Valid Values | Definition | Definition Source |
|---|
| ROUTE_ID | - |
The Route ID for the LRS will be a unique ID for a route within a jurisdiction. This field is filled in with the following data entry mask: SSGGGGGGGGGGNNNNAD. The SS portion is a 2- character code indicating the jurisdiction of the ownership of the route (Ex. '01' = Interstate, '02' = U.S. Highway, '07' = County Road). The GGGGGGGGGG portion is the Geographic Names Information System (GNIS) ID for the jurisdiction of the route in the case of a trunk highway route it will be all zeros. The NNNN portion is for the actual designated route number. The A portion is an alpha for all routes; for routes such as I35E it will contain the letter at the end of the route 'number', and for all other routes it will be the dash character “-“. The D portion indicates whether the routes direction of travel is Increasing with mileage or Decreasing. | |
| FROM_MEASURE | - | Beginning measure of the feature | |
| TO_MEASURE | - | End measure of the feature | |
| REFERENCE | - | Number signed on the post | |
| OFFSET | - | Anything other than a '0' indicates a post that exists within a gap in the route. This post is the offset value back into the gap from the location mapped. | |
| STATUS | - | Indicates 1= post exists in the field, 2= post is theoretical and only exists in the database. | |
| DESCRIPTION | - | English translation of the Status field | |
Section 6: Distribution
Publisher:
Minnesota Department of Transportation
Publication Date:
2022-04-26
Contact Person Information:
Peter Morey,
Roadway Data and Support Section Director
Minnesota Department of Transportation
395 John Ireland Blvd.
Saint Paul,
MN
55155
Phone: 651-366-3872
Fax: 651-366-3886
Email: linearreferencingsystem.admin.dot@state.mn.us
Distributor's Data Set Identifier:
Reference Post
Ordering Instructions:
The data may be requested from the Contact person listed in the metadata. Online Linkage: I AGREE
to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.
Section 7: Metadata Reference
Metadata Date:
2022-04-26
Contact Person Information:
Kyle House,
Research Analyst Intermediate
Minnesota Department of Transportation
395 John Ireland Blvd.
Saint Paul,
MN
55155
Phone: 651-366-3873
Fax: 651-366-3886
Email: linearreferencingsystem.admin.dot@state.mn.us
Metadata Standard Name:
Minnesota Geographic Metadata Guidelines
Metadata Standard Version:
1.2