TreSP-Network Questionnaire on blue lights

Following our 8th TreSP-Network meeting held on 5 December 2023 in Stockholm we may send you a questionnaire on blue lights, you would be kind enough to reply by January 31st to enable us and Johan-Fredin to make a debrief at our 9th meeting to be held on 6 February 2024 (+ technical visit on 7th) at FFE in Madrid.
Thanks a lot for filling the following form.

1. Do you use any blue lights in your country?
4. Where are those blue lights installed?
5. How are they installed in stations?
7. Why do you use blue lights?

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vendredi 15 décembre 2023