MKD (medzinárodná kamiónová doprava) — international truck transport: driving trucks between EU countries, often spending weeks on the road.
To work in MKD, you need a C+E driver's license, a driver qualification card (KKV, "code 95"), and a tachograph card. Your salary is made up of a base rate and diéty (daily allowances for food when traveling for work), so the amount you receive "in hand" is noticeably higher than the base rate.