All rail routes between this pair of countries are 1520mm gauge.
(Baku -) Yalama ADDY - Samur RŽD (- Derbent)
RŽD cancelled a number of trains in December 2014, those between Baku and Rostov, Tyumen and Moskva. The only remaining trains are a weekly service between Baku and Moskva and one approximately every four days between Baku and Kharkiv. This border crossing was formerly open only to citizens of CIS and Azerbaijan but as at September 2014 appears to be available to other nationalities.