![Crediton station, level crossing and signal box, Crediton, Devon. The signalman receives the token from the train driver from the Okehampton section Stock Photo - Alamy Crediton station, level crossing and signal box, Crediton, Devon. The signalman receives the token from the train driver from the Okehampton section Stock Photo - Alamy](https://c8.alamy.com/comp/2JFB303/crediton-station-level-crossing-and-signal-box-crediton-devon-the-signalman-receives-the-token-from-the-train-driver-from-the-okehampton-section-2JFB303.jpg)
Crediton station, level crossing and signal box, Crediton, Devon. The signalman receives the token from the train driver from the Okehampton section Stock Photo - Alamy
![Token system at the signal box at Bridgnorth Railway Station on the Severn Valley Railway Stock Photo - Alamy Token system at the signal box at Bridgnorth Railway Station on the Severn Valley Railway Stock Photo - Alamy](https://c8.alamy.com/comp/AXR9PK/token-system-at-the-signal-box-at-bridgnorth-railway-station-on-the-AXR9PK.jpg)
Token system at the signal box at Bridgnorth Railway Station on the Severn Valley Railway Stock Photo - Alamy
![Boxplots for all ∆ s values of several signal token types across the... | Download Scientific Diagram Boxplots for all ∆ s values of several signal token types across the... | Download Scientific Diagram](https://www.researchgate.net/publication/338476472/figure/fig4/AS:845270824808451@1578539677099/Boxplots-for-all-s-values-of-several-signal-token-types-across-the-test-corpus_Q640.jpg)