Traffic Count Segments
Road segments with traffic monitoring data, including average annual daily traffic (AADT) — the standard measure of how much traffic a road carries on a typical day, and the starting point for most capacity, safety and freight analysis.
- Published by
- ODOT Office of Technical Services, Traffic Monitoring
- Source
- Ohio Department of Transportation TIMS
- Original data
- tims.dot.state.oh.us
- Terms of use
- Public information, no warranty (ODOT)
- On the map
- Lines
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Sections of the Road Inventory with traffic monitoring data, including Average Annual Daily Traffic (AADT).
Questions answered with this data
- Map the structures and routes in the Eastgate area around Youngstown exposed to slope failure, scour and flooding, and show what traffic depends on each.
- Color every state-highway segment by its fatal and serious-injury crash rate per 100 million vehicle miles over 2021–2025, in quintiles, and mark the worst 25 stretches on top.
- For the MORPC area around Columbus, compute fatalities, serious injuries, each as a count and as a rate per 100 million vehicle miles, and non-motorized fatalities and serious injuries, for each of the last five years, and map where they fall.
Fields
What each record holds, as the publisher describes it: 20 fields.
| Field | Description |
|---|---|
OBJECTID | Internal feature number. [Esri] |
ID | Unique identifier for the record |
STATION_ID_NBR | Unique Identifier for AADT Station |
NLFID | Primary key field that is the basis for identifying unique roadway segments in ODOT's graphic roadway network. The attribute is made up of seven components that describe administrative and other characteristics related to a route segment; Positions (1) - Jurisdiction, (2 thru 4) - County Code, (5 thru 6) - Route Type, (7 thru 11) - Route Number, (12) - Extension Code, (13) - Description Code, (14) - Direction Code; For further definitions of codes, please refer to the Roadway Information Manual |
COUNTY_CD | The 3-letter code of the county within Ohio (88 counties total) |
ROUTE_TYPE | Two letter code indicating the basic transportation grouping or system that the route belongs to - third component of the NLFID |
ROUTE_NBR | Route number associated with the section of the route |
CTL_BEGIN_NBR | Beginning County Log Point of the section of the route |
CTL_END_NBR | Ending County Log Point of the section of the route |
SEGMENT_LENGTH | Measure of length of AADT Segment |
AADT_YEAR | Year original data was collected. |
AADT_TOTAL | Total Annual Average Daily Traffic |
AADT_CARS | Annual Average Daily Traffic for passenger type vehicles |
AADT_TRUCKS | Annual Average Daily Traffic for type BC trucks. (B=Buses C= Commercial Trucks) |
AADT_SINGLE_UNIT_TRUCKS | Annual Average Daily Traffic for single-unit trucks. (A truck tractor unit pulling other such units in a saddle mount configuration will be considered one single-unit truck) |
AADT_COMBINATION_TRUCKS | Annual Average Daily Traffic for Combination Trucks. (Combination vehicles are vehicles with a tractor and multiple trailers, often trailers of different sizes and layouts.) |
VMT_TOTAL | Total miles travelled a given period of time. |
VMT_CARS | Total miles travelled by cars over a given period of time. |
VMT_TRUCKS | Total miles travelled by type BC trucks over a given period of time. (B=Buses C= Commercial Trucks) |
TRAFFIC_REPORTS | Link to corresponding traffic report |