A acquaintance told me. He was on the train SPB - Rostov recently. Smoking in trains is prohibited. He approached the conductor and honestly asked how it was possible to smoke in the tambour.

Buy a lottery ticket and smoke.

And the guard?

Show the ticket and all.

Standing and smoking. The guard passes and makes a comment. He shows a lottery ticket. The guard:

Keep it in your pocket so that we can see it every time.

Okay