Hacker News: avp210https://news.ycombinator.com/user?id=avp210Hacker News RSShttps://hnrss.org/hnrss v2.1.1Sat, 31 Oct 2026 16:20:04 +0000<![CDATA[New comment by avp210 in "Digital radio-based train control system"]]>Lots of people were discussing the lack of precise train location control in the recent thread about the train crash in Spain. The ETCS Level 2 uses GPS and GSM in order to know the precise location, speed and direction of trains. Unfortunately it is not so wide spread, probably due to costs (both the infrastructure and the vehicle need changes)

]]>Fri, 30 Oct 2026 10:26:00 +0000https://news.ycombinator.com/item?id=50302009avp210https://news.ycombinator.com/item?id=50302009https://news.ycombinator.com/item?id=50302009<![CDATA[Digital radio-based train control system]]>Article URL: https://en.wikipedia.org/wiki/European_Train_Control_System

Comments URL: https://news.ycombinator.com/item?id=50302008

Points: 1

# Comments: 1

]]>Fri, 30 Oct 2026 10:26:00 +0000https://en.wikipedia.org/wiki/European_Train_Control_Systemavp210https://news.ycombinator.com/item?id=50302008https://news.ycombinator.com/item?id=50302008<![CDATA[New comment by avp210 in "What we know so far about Spain train crash"]]>There is a system that does exactly that, its called ETCS Level 2: https://en.wikipedia.org/wiki/European_Train_Control_System But its not so wide spread unfortunately. Also if it fails then you are back to operators taking decisions

]]>Fri, 30 Oct 2026 10:19:34 +0000https://news.ycombinator.com/item?id=50301963avp210https://news.ycombinator.com/item?id=50301963https://news.ycombinator.com/item?id=50301963<![CDATA[New comment by avp210 in "Only 17% of all 64-bit Integers are products of two 32-bit integers"]]>Only 20% of 2 digit numbers are product of one digit numbers: 10 (1+9), 11, 12, 13 … 18 (9+9)

]]>Wed, 03 Jun 2026 09:19:11 +0000https://news.ycombinator.com/item?id=48381730avp210https://news.ycombinator.com/item?id=48381730https://news.ycombinator.com/item?id=48381730