Volume Data
Pima County collects and maintains traffic volumes for many roadways in unincorporated Pima County. Data is collected as either a short duration count or a continuous count. A short duration count is typically for a 24-hour timeframe and is known as Average Daily Traffic (ADT). Continuous count data is obtained from a permanent counter station that collects continuous traffic volume data. This raw data is analyzed based on daily, weekly, and seasonal cycles to develop the traffic volume used for planning which is known as Annual Average Daily Traffic (AADT). Pima County uses AADT developed by the Pima Association of Governments (PAG) for planning.
Regional AADT Counts for Planning Purposes
PAG Travel Data and Forecasting
Traffic Ordinances
Ordinances are available through this link. For ordinances such as "L01 - Traffic Signals," "L03 - Intersection Control Beacon," and "O01 - Stop," their location may be defined by cross streets. Therefore, to see all ordinances of these types on a given street, check "Include ordinances with this location in From or To."