Welcome to the world of railway signalling! SimSig brings the signalbox to your home PC, and with it the enjoyment and frustrations of a running today’s railways.

SimSig is such a realistic signalling simulation that Railtrack, as they were then, bought an enhanced version of Didcot (Swindon B IECC) for use as signaller training. SimSig has continued since into the even-more-realistic simulation that it is today.

At SimSig we pride ourselves on attention to detail. While we may not produce many simulations, the ones you do get have been carefully researched and designed to be as close to the real thing as possible.

Browse our Web site for more information about SimSig. If you have any questions or comments, please use our forum.

Finally, SimSig is free and, as such, is not regularly maintained. However, updates do happen from time to time and we may bring out a new simulation every now and again, so keep visiting the site!