The train emoji shows an oncoming train and some portion of the track; a slightly stressful emoji to look at due to the fact it looks like the train might be coming for you!
The train emoji was introduced in 2010 and released as part of the Unicode 11.0 standard. This emoji can be found under the travel and places
category. Because the train emoji has been around for quite some time, it should display correctly in the majority of operating systems.