I hate to "well actually"...but some loco's do actually have steerable bogies (or trucks). The class 66 is an example of such a loco which permits it to go pretty much anywhere on the UK rail network where the track would previously only allow lighter and less powerful engines.

https://www.youtube.com/watch?v=2OGRwD-00b8

https://patents.google.com/patent/US20030230213

Not sure if this is what jarfil meant by "steering".