AIRE is an ancillary software module specifically designed to post-process the outputs from traffic microsimulation models and calculate vehicle emissions.
AIRE takes outputs from microsimulation models for individual vehicles at each simulated time-step, typically twice a second, and estimates the tailpipe emissions based on their current speed and acceleration. The module uses detailed Instantaneous Emissions Modelling (IEM) factors derived by TRL using the Passenger car and Heavy Duty Emissions Model (PHEM) developed by the Technical University of Graz.
AIRE can be used to process the detailed, vehicle by vehicle outputs produced by microsimulation models for each simulated time step and provides significantly more disaggregate and detailed emissions estimates compared with traditional, average speed-based methods. AIRE rapidly processes the outputs from multiple simulation runs and produces estimates of the oxides of nitrogen, particulate matter and total carbon that result from the combustion of fuel throughout each simulated vehicle’s journey.
Program Availability, Guidance Documents & Support
To obtain a copy of the AIRE program, plus associated documentation, users are directed to the AIRE website.
The program will be issued on CD-ROM together with an electronic copy of the most up to date AIRE User Guidance and other documentation (as PDFs).
The documentation can also be downloaded directly from the AIRE website.
Contacts
AIRE is developed and maintained by SIAS Ltd., in collaboration with the Transport Research Laboratory, on behalf of Transport Scotland.
For all general AIRE inquiries, plus support, and to register as an AIRE user, please email:
aire-support@sias.com
