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Database for Air Quality and Noise Analysis (DANA) Tool Version 2.1 User Guide
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2024-01-01
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[PDF-4.37 MB]
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Edition:Final Report
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Abstract:The Database for Air Quality and Noise Analysis (DANA) tool version 2.1 provides traffic-related inputs to the Motor Vehicle Emission Simulator (MOVES) vehicle emissions model and the Traffic Noise Model (TNM). DANA provides realworld measurements of traffic conditions for use in environmental analyses. By having these data already compiled, environmental analysts are spared the task of assembling the data. DANA creates the following datasets: 1. Link-Level Dataset and Summaries - The main output of the DANA tool is a detailed dataset containing traffic data for every NPMRDS link (NHS roadways) for every hour of the year. The dataset contains speeds and travel times along with the hourly percent of MOVES vehicle types and TNM vehicle types. Emission rates derived from the national emissions inventory are also included. Additional files contain summaries of the data in the link level dataset, including an annual aggregation of the traffic volumes on each NPMRDS link, sums of emissions inventories for the year, and annual aggregate noise metrics for each link. 2. MOVES County-Level Input Dataset - For the counties provided in the inputs, the following MOVES inputs are produced: Average Speed Distribution; Vehicle Type VMT, Road Type Distribution; Hour VMT Fraction; Day VMT Fraction; and Month VMT Fraction. DANA uses national VMT aggregations to produce total VMT in the entire county, not just VMT on NHS links. 3. Traffic data summaries for TNMAide - Full-year, link-level traffic data summaries output by the DANA tool serve as inputs to TNMAide. These data can be used directly in DANA’s TNMAide tab to compute: Worst Case Noise Hour Analysis – Identifies the single worst day and the worst noise hour of the day (averaged over all days) along with traffic volumes and average speeds for that hour. Estimated Noise Levels at fifty feet - Estimates the link-level Average Hourly A-weighted (LAeq), Day-Night (LDN), and Day-Evening-Night (LDEN) levels based on hourly traffic volumes, speeds, and Reference Energy Mean Emission Levels (REMELs). 24-Hour Traffic Distribution for Noise Analysis – Creates link-level hourly distributions over a 24-hour period that can be entered into FHWA’s TNM for calculation of the LDN and LDEN
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