CDOT-OTIS Online Transportation Information System

The Last Calendar year for which the data applies.

The Universal Transverse Mercator (UTM) coordinate system is a grid-based method of specifying locations on the surface of the Earth that is a practical application of a 2-dimensional Cartesian coordinate system. It is used to identify locations on the earth, but differs from the traditional method of latitude and longitude in several respects. The UTM system is not a single map projection. The system instead employs a series of sixty zones, each of which is based on a specifically defined secant transverse Mercator projection. A position on the Earth is referenced in the UTM system by the UTM zone, and the easting and northing coordinate pair. The easting is the projected distance of the position from the central meridian, while the northing is the projected distance of the point from the equator. Eastings and northings are measured in meters. The point of origin of each UTM zone is the intersection of the equator and the zones central meridian. In order to avoid dealing with negative numbers, the central meridian of each zone is given a false easting value of 500,000 meters. Thus, anything west of the central meridian will have an easting less than 500,000 meters. For example, UTM eastings range from 167,000 meters to 833,000 meters at the equator (these ranges narrow towards the poles). In the northern hemisphere, positions are measured northward from the equator, which has an initial "northing" value of 0 meters and a maximum "northing" value of approximately 9,328,000 meters at the 84th parallel — the maximum northern extent of the UTM zones. In the southern hemisphere, northings decrease as you go southward from the equator, which is given a "false northing" of 10,000,000 meters so that no point within the zone has a negative northing value.

Title	Type	Description
COHPMS	Table	This dataset contains roadway sections in the State's Sample Panel that are under the jusidiction of cities and counties. The Sample Panel provides detailed statistical data on a randomly selected sample of roadway sections in the State's public roadway inventory to meet Federal reporting requirements for the Highway Performance Monitoring System (HPMS).
TCORIS_OffSystem	Table	The TCORIS_OffSystem table is a collection of data items that pertain to roadway attributes for roadways that are maintained by local governments for the purpose of determining Highway Users Tax Fund eligibility.
AnchorOn	Table	The AnchorOn table is a Collection of Inventory Items, Features, Events or Split Point Locations that can be Field Varified and/or could be assigned a Real World Coordinate. Structures, Junctions, Crossings and Intersections are some Examples.
ClassOn	Table	The ClassOn table is a collection of events that identify the various Roadway Usage Categories, Forest Service, Restriction Details, Functional Classifications, Route Signage, Populations, some Government Areas, Boundaries, Limitations and Scenic Byways.
CondOn	Table	The CondOn table is a collection of events that identify and profile roadway pavement conditions like roughness, rutting, faulting, fatigue, percent cracking along with various other categories used to rate the quality of a roadway segment.
CurveOn	Table	Curves
DescOn	Table	DescOn is a table that contains highway segment descriptions from the GRDMS geodatabase.
HPMSSTE	Table	This dataset contains roadway sections in the State's Sample Panel that are under CDOT's jusidiction. The Sample Panel provides detailed statistical data on a randomly selected sample of roadway sections in the State's public roadway inventory to meet Federal reporting requirements for the Highway Performance Monitoring System (HPMS).
IntchOn	Table	The IntchOn Table and the Interchages Feature Class hold data and geometry for the Major Interchanges on the State Highway System.
IntersectOn	Table	The IntersectOn table is a New Collection that Describes the Node Point where Roadway Objects are Crossing each other - i.e Local-Road Intersections, Highway Junctions, Exits, Rail Roads, Interchanges, River Crossings, Culverts and Structures.
RampsOn	Table	The RampsOn table is a Collection of On Ramps and Exit Ramps including a few Design Specifications, a few classicication fields and a few Traffic Volume and Traffic Related items that have a Traffic Count Stations on the State Highway System. *
RegOn	Table	The RegOn table is a Collection of Events that Provide Detailed Information about various Maintenance and Patrol Boundaries, Engineerion Regions, Planning Areas, MPOs, Land Owners, State Senate Districts and House Districts.
RrxOn	Table	The RrxOn table is a Single Event that Provides Detailed Information about various Rail Road Crossings on the State Highway System.
SpeedOn	Table	The SpeedOn table is a Single Event that Provides Detailed Information about Posted Speed Limits on the State Highway System.
TraffOn	Table	The TraffOn table is a collection of Traffic Volume and Traffic related events that have Field Count Stations on the State Highway System.
XsecOn	Table	The XsecOn table is a collection of events that deal with road design specifications, dimensions, cross section, safety features and construction standards. The contents of XsecOn are commonly called Geometrics.