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[[_TOC_]]
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# Do I need a license file to run VECTO?
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# 1. What is the VECTO software and VECTO software platform?
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The Vehicle Energy Consumption calculation TOol (VECTO) is a software developed by the
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European Commission for determining CO<sub>2</sub> emissions and fuel consumption from the whole
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vehicle. VECTO was introduced in the European vehicle type-approval regulation in May
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2017, as the official tool used in Europe to certify and monitor the fuel consumption and CO<sub>2</sub>
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emissions from HDV. VECTO software platform consists of VECTO software and a series of
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other software tools developed for the needs of the HDV certification procedure. Those
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include VECTO Engine, VECTO AirDrag, and VECTO Hashing tools, which are used at
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various points during the certification process
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# 2. What is the relation between VECTO and official CO<sub>2</sub> certification methodology for HDVs?
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VECTO is a key component of the European Heavy Duty Vehicle CO<sub>2</sub> and fuel consumption
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certification methodology. The CO<sub>2</sub> certification methodology is based on the measurement
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of the performance of different vehicle components contributing to the vehicle energy
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consumption (aerodynamic drag, torque losses in the drivetrain, fuel map of the engine,
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power demand of auxiliaries, tyre-rolling resistance, etc.). The results of these measurements
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are then used as input in VECTO in order to simulate vehicle operation over different driving
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conditions. A series of official driving cycles have been developed for the purpose.
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# 3. Do I need a license file to run VECTO?
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No. A license used to be required in the past, but this practice is no longer applicable.
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This applies to all VECTO tools (VECTO, VECTO Multistep, VECTO Trailer, VECTO Engine, VECTO Airdrag, and VECTO Hashing).
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# Can I run VECTO Simulator in batch mode/from the command line?
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# 4. How VECTO has been developed?
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VECTO and the respective certification methodology were developed under a series of
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contracts launched by DG CLIMA. A summary of the main ones can be found [here](https://ec.europa.eu/clima/policies/transport/vehicles/heavy_en#tab-0-2). The
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Commission’s JRC acts as scientific co-ordinator of the VECTO development and has
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performed a series of independent validations, the main results of which can be found [here](http://publications.jrc.ec.europa.eu/repository/handle/JRC91415).
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Several stakeholders have contributed significantly in the development process by providing
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data, feedback, insight and by validating extensively VECTO and its sub-routines; those
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include heavy duty vehicle manufacturers, transmission manufacturers, tyre manufacturers,
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vehicle component suppliers, heavy duty vehicle body-builders and other industrial
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stakeholders. In addition, a series of non-industrial organizations have supported the
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development with feedback and validation exercises including European member states,
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research bodies and other organizations.
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# 5. Can I run VECTO Simulator in batch mode/from the command line?
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This can be accomplished by using the command line version of VECTO: `vectocmd.exe`. This executable file comes with the normal VECTO package. Check the corresponding section of the manual:
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- Navigate to the _User manual_ folder, the file is named `help.html`.
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- Open it with a browser and then look for the section _Command Line Arguments_.
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# How to cite VECTO? |
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# 6. How to cite VECTO? |
