In Network Screening - Segments, all routes in Ohio are subdivided into segments to make network screening easier. This allows you to compare smaller portions of a roadway with similar characteristics in Network Screening rather than evaluating an entire route.
Segment Criteria
When segmenting a route, a new segment is created each time one or more of the following roadway characteristics changes:
- Volume on the route (AADT, or Annual Average Daily Traffic) 
- When a route changes between Urban, Suburban, and Rural 
- If the route changes between Freeway to Non-Freeway 
- When the number of lanes changes on the route 
- When a route changes between One-Way and Two-Way 
- When a route changes between Divided and Undivided 
Segment Lengths
Ohio DOT does not limit segment lengths.
- The shortest segment is 0.0 miles 
- The longest segment is 38.96 miles. 

