The silhouettes of the most widely used railway trailers (transporters):
| 4-axis platform type transporter | |
| 4-axis low profile transporter | |
| 8-axis platform type transporter | |
| 8-axis low profile transporter | |
| 12-axis low profile transporter | |
| 16-axis joined transporter | |
| 16-axis coupled transporter | |
| 16-axis low profile transporter |

