Explaining the procedural changes to speed regulations on British railways, using signals with animated diagrams, models, and footage of trains and drivers.
| Release Date | January 1, 1976 | |
|---|---|---|
| Status | Released | |
| Original Title | Flashing Yellows | |
| Runtime | 10min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | British Transport Films | |