《Turkishtenders》2004年12月17日報道，安卡拉－伊斯坦布爾二期鐵路改造（Vezirhan-Inonu段）招標資格預選于2004年12月16日下午3點截標，該項工程100％利用外國貸款，業(yè)主為土耳其鐵路總局。總計11家公司提交了標書，其中包括8家國際財團、2家合資公司和1家合伙公司，名單如下：
1. LIMAK INSAAT
IRCON INT. LTD. (India)
2. HOCHTIEF (Germany)
ENKA INSAAT AS
GAMA AS
3. NUROL INSAAT AS
RHOMBERG BAU (Germany)
TELVENT (Spain)
4. TEKFEN INSAAT AS
ELECNOR SA (Spain)
COBBA (Spain)
DIMETRONIC (Spain)
5. YUKSEL INSAAT AS
ZSCHOKKE LOCHER AG (Switzerland)
6. YAPI MERKEZI AS
MOWLEN
KISKA KOM.
OBAYASHI (Japan)
7. OBRANCON HUARTE LAIN SA(Spain)
ZS BRNO AS (Spain)
KOLIN INSAAT AS
8. ALARKO-ALSIM AS
SIEMENS AG (Germany)
9. CRCC (China)
CMC (INDIA)
CENGIZ INSAAT
ICTAS INSAAT
10. DOGUS INSAAT AS
UKRMETROTUNELBUD (Ukraine)
UKRTRANSELEKTROMONTAJ (Ukraine)
GULERMAK AS
YENIGUN INSAAT
11. ASTALDI SPA (Italy)
TEPE INSAAT AS
AKFEN INSAAT AS ANSALDO (Italy)