https://irse.signalpost.org/ Mon, 31 Aug 2026 08:03:50 +0000 MyBB https://irse.signalpost.org/showthread.php?tid=2450 Fri, 13 Oct 2023 20:08:17 +0000 jimmyinin]]> https://irse.signalpost.org/showthread.php?tid=2450
Line speed = 70km/hr - converted into m/s = 19.44m/s 
Sighting Distance = 200m
Overlap =300m 
Distance between 2 signals = 2km = 2000m 
 ·       ¾ loaded super freighter 5x81 class + 58 wagons (see GW-40). 
1 in 60 falling grade

Calculated Braking Distance = BD= Line Speed x2/2a ( acceleration rate of 1.0m/s2 from NIST 012 ( Velocity DMU)
BD = 19.44x2/2(1.0)= 19.44m/s 

Headway Distance = BD+d+OL+Length of train+Sighting Distance = 4119.44 
Headway Time = Headway Distance/V= 4119.44/19.44= 211.9 seconds = 3.53minutes

I get the gist for 3 aspect and 4 aspect but struggle with 2 aspect calculations. Can someone advise if I have done the calculations correctly. 

Thanks, 
Jimmy]]>
Line speed = 70km/hr - converted into m/s = 19.44m/s 
Sighting Distance = 200m
Overlap =300m 
Distance between 2 signals = 2km = 2000m 
 ·       ¾ loaded super freighter 5x81 class + 58 wagons (see GW-40). 
1 in 60 falling grade

Calculated Braking Distance = BD= Line Speed x2/2a ( acceleration rate of 1.0m/s2 from NIST 012 ( Velocity DMU)
BD = 19.44x2/2(1.0)= 19.44m/s 

Headway Distance = BD+d+OL+Length of train+Sighting Distance = 4119.44 
Headway Time = Headway Distance/V= 4119.44/19.44= 211.9 seconds = 3.53minutes

I get the gist for 3 aspect and 4 aspect but struggle with 2 aspect calculations. Can someone advise if I have done the calculations correctly. 

Thanks, 
Jimmy]]> https://irse.signalpost.org/showthread.php?tid=2204 Fri, 11 Aug 2017 09:20:41 +0000 Jerry1237]]> https://irse.signalpost.org/showthread.php?tid=2204
Using accident data to support assumptions (which you should always write down when answering a question) and points you are trying to make is a positive method. Staplehurst is one of my go-to accidents.

Jerry]]>
Using accident data to support assumptions (which you should always write down when answering a question) and points you are trying to make is a positive method. Staplehurst is one of my go-to accidents.

Jerry]]> https://irse.signalpost.org/showthread.php?tid=2181 Tue, 07 Feb 2017 15:18:03 +0000 NJK]]> https://irse.signalpost.org/showthread.php?tid=2181
I have one doubt in Switch / Point Operation.

Assume a switch is started operation from its present position. Before completing the operation, its power supply disconnected or failure by any means.

Now the point is not in normal or in reverse.

What is the position of tongue switch ? it will be in middle or it will be go back to its originated position ?

Kindly clarify.

Thanks]]>
I have one doubt in Switch / Point Operation.

Assume a switch is started operation from its present position. Before completing the operation, its power supply disconnected or failure by any means.

Now the point is not in normal or in reverse.

What is the position of tongue switch ? it will be in middle or it will be go back to its originated position ?

Kindly clarify.

Thanks]]> https://irse.signalpost.org/showthread.php?tid=2176 Sun, 22 Jan 2017 22:35:30 +0000 Abhishek.Vidyarthi2]]> https://irse.signalpost.org/showthread.php?tid=2176
I attempted the question 1-a of 2016 paper.It asked the minimum braking distance for passenger and freight train.Now passenger train and freight train runs at speed of 120Km/h with acceleration/de-acceleration of 0.8 m/s and 100 Km/Hr with ace./de-ace. rate of 0.5m/s.

After calculation they give me braking distance as follows:- passenger rains 695 meters and freight train 773 meters.

Do I need to consider 773 meter as D(distance between consecutive stop signal for my answer to question 1.b??

Regards
Abhishek]]>
I attempted the question 1-a of 2016 paper.It asked the minimum braking distance for passenger and freight train.Now passenger train and freight train runs at speed of 120Km/h with acceleration/de-acceleration of 0.8 m/s and 100 Km/Hr with ace./de-ace. rate of 0.5m/s.

After calculation they give me braking distance as follows:- passenger rains 695 meters and freight train 773 meters.

Do I need to consider 773 meter as D(distance between consecutive stop signal for my answer to question 1.b??

Regards
Abhishek]]> https://irse.signalpost.org/showthread.php?tid=1918 Tue, 21 Apr 2015 16:28:14 +0000 Abdul]]> https://irse.signalpost.org/showthread.php?tid=1918
The papers must be corected by examiner familar with principles declared. Were the layouts corrected by a manager who decided to pass his own staff? Awarding your staff good grades discredits integrity of exam.

On behalf of all who has to work hard to pass their exams I am very dissappointed in IRSE.

Abdul]]>
The papers must be corected by examiner familar with principles declared. Were the layouts corrected by a manager who decided to pass his own staff? Awarding your staff good grades discredits integrity of exam.

On behalf of all who has to work hard to pass their exams I am very dissappointed in IRSE.

Abdul]]>