Editing Signal passed at danger (section)

=== Flank protection ===
At certain junctions, especially where if the signal protecting the junction was passed at ''danger'' a side collision is likely to result, then flank protection<ref>{{cite web
| title       = Railway Group Standards: Provision of Overlaps, Flank Protection & Trapping
| url         = https://www.rssb.co.uk/rgs/standards/GKRT0064%20Iss%201.pdf
| publisher   = RGS
| access-date  = 18 February 2011
}}</ref> may be used. Derailers and/or facing points beyond the signal protecting the junction will be set in such a position to allow a safe overlap if the signal was passed without authority. This effectively removes the chance of a side-impact collision as the train would be diverted in a parallel path to the approaching train.