Any vehicle crossing the border passes a radiation detector, which lowers a barrier in the driver's path if it senses that something is wrong.
Sometimes the cause is timber for European furniture factories, which has been cut from contaminated forests near the ruined Chernobyl nuclear power station. We have also encountered radioactive icons taken from abandoned houses.
We have had no cases of nuclear smuggling. Drug trafficking is also rare here, though once we seized chemicals capable of producing 40 kilos of amphetamines.