About site:

Domain name - 4dd.biz

Site title - Title not available

Go to website - link to 4dd.biz was blocked

Site Logo

IP address:

3.64.163.50

Domain name servers:

ns2.dan.com ns1.dan.com

Number of allowed queries exceeded.

Brief facts about 4dd:

The SR Class 4DD was an experimental double-decker electric multiple unit built in 1949 and operated by the Southern Railway until 1971. Conceived by Oliver Bulleid for the Southern Railway's commuter line from London Charing Cross to Dartford, the two trains were the only double-decker trains to be used on the mainline railway network in Britain. Whilst commonly used in continental Europe and North America, the restrictive railway loading gauge in the United Kingdom prohibits normal double-decker trains with two fully separated decks.

Double-decker EMUs

British Rail electric multiple units