Roadway Data

The Log Point file is a sequential listing of landmarks like intersections, railroad crossings, city limit boundaries, bridges, etc. that you would cross as you drive along the road in the increasing Reference Post direction. The Reference Point associated with each landmark consists of the previous Reference Post (located on the roadway shoulder) plus the decimal fraction of a mile past the post. Also included:

• Distance [odometer] from the beginning of the route in the ACCUM miles column
• Recent traffic volume

Read the new policy for trunk highway logpoint listings - September, 2011 (Word)