Andrade Safe — industrial traffic, educational stopping model
Published14October2026. Not a reconstruction of the CSN accident, vehicle test, speed limit or clearance design.
Open laboratorio-parada.html locally, choose PT/EN/ES. No external scripts, server submission or automatic storage.
Python3: modelo-parada.py. CSV uses units in header names and fictitious scenarios.
Model constant speed during reaction then constant positive deceleration in a straight line; excludes extra brake delay, slope, changing grip, perception distance and pedestrian motion.
Figures show generic segregation, layers and a fictitious stopping calculation, not UPV layout or proven failures.
Photo licenses and credits: photo-credits.md/photo-provenance.json. No photograph is established as showing CSN/UPV or the accident.
