The US Highway Classification project seeks to harmonize highway tagging across the US. The federalized structure of our vast country leads to a wide variety of road funding, building, and designation practices. By necessity, local mappers in each state must figure out guidelines for how to choose appropriate classifications based on their state's practices and available data.

This workshop will dive into the details of developing state-level classification guidelines. Beginning with an overview of the process already used in some states, we'll look at the data sources provided by state DOTs, discuss ways of interpreting their meanings in the context of OSM, and look at common pitfalls with certain data sources. We'll help participants identify appropriate starting points for their States of interest and get started on or improve a draft.

Project wiki page: https://wiki.openstreetmap.org/wiki/United_States/2021_Highway_Classification_Guidance