Construction blockade or the opening of the scheduling command, train dispatcher must obtain the request of the station attendant (CTC section station attendant station, by the construction unit head requests), before release.
These high energy photons are then focused to a small spot (just like you probably did at school once you used a magnification glass to focus the sunlight burning things!). If it is a vector laser, this beam is deflected and directed by using a set of mirrors (X and Y deflection). This guide will allow you to understand the capabilities in the 3 most frequent lasers available in the market today:
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