Agriculture and proximity to roads: How should farmers and retailers adapt? Examples from the Ile-de-France region

The present study was carried out in the Ile-de-France region surrounding Paris, which is both the biggest conurbation in France and a large agricultural area. In areas such as these, airborne pollutants from road traffic may adversely affect the quality of the food produced by farms close by. This raises questions about the spatial compatibility of farming and road networks, although there is currently no scientific consensus concerning potential health risks for producers and consumers. Some actors in agricultural supply chains have tried to limit potential risks by producing technical guidelines, including isolation distances between major roads and fields farmed under contract. This paper analyses these “isolation distances”, using approaches from the agricultural and social sciences: surveys on stakeholders in agribusiness and on farmers, and a cartographic simulation submitted to the surveyed farmers for discussion. The results show that isolation distances serve to create market opportunities in a context of market segmentation, or are applied as a precautionary principle. Though not a widespread practice, safety distances could have considerable impacts on farms in terms of both technical management and total farm area, thus calling for further scientific research on this issue.

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► Safety distances to roads are new technical criteria imposed on farmers.
► These safety criteria are not scientifically demonstrated.
► Safety distances to roads are marketing strategies of agricultural sectors.
► They could have impacts on farms, on technical management and total farm area.