Factorio Forums

Posted: **Sat Aug 08, 2026 4:53 pm**

In some cases, it's impossible to place rail signals that should be placeable:

: 08-08-2026, 18-52-33.png (1.22 MiB) Viewed 221 times

: 08-08-2026, 18-49-15.png (1.52 MiB) Viewed 221 times

Removing any of the rails below the one the signal should be attached to suddenly allows the signal to be placed (at this point, the rail can be placed back):

: 08-08-2026, 18-51-14.png (916.52 KiB) Viewed 221 times

Blueprint string that triggers the issue (delete the signal & undo if it's placed too early):

Code: Select all

0eNql1NuOgyAQBuB3mWtsCoqKr9JsGqukS2LRAJo1xndf1D26002rNxoVvvlFxgEuVSsbo7SDbABV1NpCdhrAqqvOq+mezm8SMjC5qmAkoHQp3yCjI7kzKLBt09TG/RjMxhcCUjvllFz4+aI/6/Z2kcZr5FOQlexyJ8vAOo9dX10wFybQ1NZPr/VUzZMBCxMCPWR8nJKsPEbQRPeVCFPC7akSzItWqZbVw5D0wGfGn/0qTqPPVd5PxlcUQArw7YEFFjje7lGKgckOMMTAdAeI7hyxA0Q/Oj0+uxdpjDo7eoSiX5eyv2LRms6f5qT5PyJjfl+WyshieUqPWIHw8VdPF5avWEx9vI2SjzZi8WEFiye6ivIt6ySWyunvugzzN7XZ4oe+zfy/VTl589O//+UEOmnsPIHHTERC8DSKE38Yx3eZ7fdP

Posted: **Sat Aug 08, 2026 5:07 pm**

You have signaled it to be direction north only, if you want to make the track bidirectional you need to pair up the signal you already placed.

Posted: **Sat Aug 08, 2026 6:40 pm**

Right... No idea how I missed that. That being said, I guess the error "Rail support is in the way" is quite misleading. Maybe something like "Wrong side of one-way track" or something would be more helpful?

Factorio Forums

[2.0.77] Can't place rail signal on elevated rail in certain cases ("Rail support is in the way")

[2.0.77] Can't place rail signal on elevated rail in certain cases ("Rail support is in the way")

Re: [2.0.77] Can't place rail signal on elevated rail in certain cases ("Rail support is in the way")

Re: [2.0.77] Can't place rail signal on elevated rail in certain cases ("Rail support is in the way")