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OFF can inform the user on distances involved in the consumption of food. This already partially done by the [[Made Near Me|MadeNearMe]] website. This can be extended and better integrated within OFF itself. And not only the distance can be added, but also the implied CO2 impact.
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Open Food Facts can inform the user on distances involved in the consumption of food. This already partially done by the [[Made Near Me|MadeNearMe]] website. This can be extended and better integrated within OFF itself. And not only the distance can be added, but also the implied CO2 impact.
    
The idea is based on the [[Eco-score transport - en|Transportation part of the ecoscore]].
 
The idea is based on the [[Eco-score transport - en|Transportation part of the ecoscore]].
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The total distance formula consists of three parts:  
 
The total distance formula consists of three parts:  
 
* ingredients: the transportation of the ingredients to the production site;
 
* ingredients: the transportation of the ingredients to the production site;
* wholesale: the transportation of the finished product to the seller;
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* wholesale: the transportation of the finished product to the reseller;
 
* distribution: the transportation from the reseller to the consumer;
 
* distribution: the transportation from the reseller to the consumer;
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==== Wholesale ====
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The part of the distance concerns the transport from the production location to the reseller warehouse. This might involve the transport between two countries.
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Distance<sub>wholesale</sub> = Distance<sub>producer</sub> + Distance<sub>inter-country</sub> + Distance<sub>warehouse</sub>
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In this we have:
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* Distance<sub>producer</sub> - the distance between the producer NUTS-location to the centroid of the country;
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* Distance<sub>inter-country</sub> - the distance between the country centroids of the producer and reseller;
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* Distance<sub>warehouse</sub> - the distance between the centroid of the country and the reseller warehouse. Usually the location of the reseller warehouse will be assumed to be the same as country centroid, so set to zero;
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==== Distribution ====
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The distribution part of the formula concern only transport within a single country. It concerns the transportation from a wholesale warehouse of the reseller to the consumer. For this we should know the location of the warehouse and consumer to the NUTS-level that we want to use. If this is unknown, we can use a larger area NUTS-level or the entire country. We need to calculate the distance between the NUTS-area centroid of the wholesale location and the NUTS-area centroid of the consumer location. If we must assume the entire country, then the country sizes can be used as approximation.
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These distances are tabulated in various spreadsheets for the NUTS-1 levels:
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{| class="wikitable"
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|-
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! Country !! NUTS-level !! Spreadsheet link
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|-
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| France || NUTS-1 || Example
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|-
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| Germany || NUTS-2 || Example
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|-
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| Example || Example || Example
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|}

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