How CO2 monitors and crackdown on stowaways pushed migrants overboard

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In recent years, authorities have cracked down on people trying to hide or hide under lorries through the Channel Tunnel, migrants’ preferred method of reaching the UK.

The French and UK governments have installed walls, wire fencing, additional security and cameras, as well as more onboard controls, such as carbon dioxide monitors to detect stowaways, on the vehicles of transport to close access to this road.

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Carbon monitors can detect people breathing within a 40-foot radius and can be calibrated to ensure false alarms for fruits and vegetables are not triggered.

The normal atmospheric level of CO2 is 400 parts per million, but the presence of a single individual breath can increase it to 500 parts per million when in an empty shipping container. An average person can exhale up to 24 liters of CO2 per hour.

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Even when there is a slight draft, the new detectors are able to confirm the presence of a person within hours.

More and more trucks are also subject to random spot checks, as they pass through scanners capable of detecting people hiding in shipments.

Drivers have also been threatened with huge fines if caught with illegal migrants in their consignments.

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