shortening the train headway in yokosuka line of jr east...
TRANSCRIPT
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Shortening the Train Headway
in Yokosuka Line
of JR East Company
Motoki HaradaEast Japan Railway company
RailTokyo2015
24 March 2015
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1. Introduction
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Outline of Yokosuka Line
Yokosuka Line
Tōkyō
Shinagawa
Ōsaki
Musashi-kosugi
Shin-tsurumi
Shin-kawasaki
Yokohama
Nambu Line
Yokohamahazawa
Shinjyuku
Kurihama
Ōfuna
Hebikubo
Nishi-ōi
Tōkaidō Line
Yokosuka
Odakyu Enoshima Line
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Characteristic of Yokosuka Line
Table : Characteristic of Yokosuka Line
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Yamanote Freight Line
Outline of Tōkaido Freight Line
Yokosuka Line
Tōkyō
Shinagawa
Ōsaki
Musashi-kosugi
Shin-tsurumi
Shin-kawasaki
Yokohama
Nambu Line
Yokohamahazawa
Shinjyuku
Kurihama
Ōfuna
Hebikubo
Nishi-ōi
Tōkaidō Line
Yokosuka
Odakyu Enoshima Line
Tōkaidō Freight Line
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Characteristic of these lines
various trains are operated !
Yamanote Freight LineYokosuka Line
Tōkyō
Shinagawa
Ōsaki
Musashi-kosugi
Shin-tsurumi
Shin-kawasaki
Yokohama
Nambu Line
Yokohamahazawa
Shinjyuku
Kurihama
Ōfuna
Hebikubo
Nishi-ōi
Tōkaidō Line
Yokosuka
Odakyu Enoshima Line
Tōkaidō Freight Line
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Mutual Direct Operation between Sotetsu Line and JR East Line
Tōkyō
Shinagawa
Ōsaki
Musashi-kosugi
Shin-tsurumi
Shin-kawasaki
Yokohama
Yokosuka Line
Tōkaidō Freight Line
Nambu Line
Yokohamahazawa
Shinjyuku
Kurihama
Ōfuna
Hebikubo
Nishi-ōi
Tōkaidō Line
Yokosuka
Yamanote Freight Line
Odakyu Enoshima Line
Ebina
Yamato
Shonandai
Futamatagawa
Nishiya
SotetsuIzumino Line
Sotetsu Main Line
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Mutual Direct Operation between Sotetsu Line and JR East Line
Through trains could be set up 4 times an hour!
Minimum train headway:
2'30"→2'10" (Hebikubo ~Yokohama)
Tōkyō
Shinagawa
Ōsaki
Musashi-kosugi
Shin-tsurumi
Shin-kawasaki
Yokohama
Yokosuka Line
Tōkaidō Freight Line
Nambu Line
Yokohamahazawa
Shinjyuku
Kurihama
Ōfuna
Hebikubo
Nishi-ōi
Tōkaidō Line
Yokosuka
Yamanote Freight Line
Odakyu Enoshima Line
Ebina
Yamato
Shonandai
Futamatagawa
Nishiya
SotetsuIzumino Line
Sotetsu Main Line
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In order to shorten the minimum train headway …
Many signal cables were neededSignal Systems
had to be repaired
T1(1)BEFORE
T2(<T1)
(2)AFTERMove
Increase
Expensive !
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Simplification and Integration of Signal Equipment
・Changing the track circuit between stations to the non-insulated one
・The simplification and integration of signal control equipment
・The exchange of decrepit station interlocking devices
Severe environmental condition!
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By carrying out both projects at the same time …
moving and increasing
wayside signals
simplification and
integration of
signal equipment
Reduction in cost
was possble !
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Schedule
Table : Schedule of the related project
~2009 2010 2011 2012 2013 2014 2015 ~ 2018~
Feb.1st step
Mar.Musashi-kosugi
new station opened
Aug.2nd step
Jan.3rd step
Mutual direct operation project
Mutual direct
operation will
be started
3rd step: Yokohama station
1st step: Hebikubo signal station~ Shin-tsurumi signal station
2nd step: Shin-tsurumi signal station~ Yokohama station
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2. Technological background
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ATS-P system configuration
Wayside signal (Stop)
Transceiver Controller
Monitoring device or
Setting device of a train number
Display
Switch
etc.
On-board antenna
Tacho-generator
Velocity check pattern
Implemen
box
Trace of a train
Distance information to a stop signal
Ground coil
RepeaterEncoder
Repeater
Ground coil
On-vehicle equipmentOn-board antenna, Transceiver, Controller and so on
Ground equipmentEncder, Repeater, Ground coil and so on
Train identification information
Brakecommand
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Aspect up function (the additional function of ATS-P)
Train identification information (HDC, MDC and LDC)
ECRP
EC EC
Aspect can be improved!Train identification
information
Basic sequence
MDC sequence
HDC sequence
Aspect sequenceG
Y
G
Y
YYR RR
Y
GG
Y
R
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How to shorten the minimum train headway
R Y YG G
R Y G
YR G
R Y G
R Y G
R Y G
t2t1
T1
B
A
t0
U1
U2
U3
U4
U5
U6
Distance
Time
Succeeding trainPreceding train
A Sta.A Sta.
Speed(km/h)
Distance
75
Stop time
t2t1
T2
Un
YG G
Y G
R Y GA Sta.
B
A
Distance
Speed(km/h) 75
(1) Moving the related signalsIt is the easiest method of shortening the minimum train headway.
(2) Increasing the related signals (especially the mid-platform signal)
YG
Y
R Y
R
YR G
R Y G
R Y G
R Y G
t0
U1
U2
U3
U4
U5
U6
Distance
Time
Succeeding trainPreceding train
A Sta.
G
G
T2 < T1
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B
A
t0
75 55
A Sta.
(3) YG assumption
R Y YG G
R Y G
YR G
R Y G
R Y G
R Y G
U1
U2
U3
U4
U5
U6
Distance
Time
A Sta.
Un
R Y GA Sta.
Distance
Speed(km/h)
t2t1
T3
R Y YG G
R Y G
YR G
R Y G
R Y G
R Y G
t2t1
B
A
t0
U1
U2
U3
U4
U5
U6
Distance
Time
A Sta.
Un
R Y GA Sta.
Distance
Speed(km/h) 75
T2
The mid-platform signal has already been increased !
T3 < T2
Time △T
Operating time come to be longer
How to shorten the minimum train headway
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3. Case studies
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Musashi-kosugi
Shin-tsurumi
Yokohama
Nishi-ōi
Hebikubo
Megurogawa
Shin-kawasaki
→Tōkaidō Freight Line
Tōkaidō Line
Revision and abolition of signals 【Legend】
: Newly Established
: Removed
Newly established signals
⇒ 62 signals
Removed signals
⇒ 35 signals
Replacement of aspects
⇒ 11 signals
Newly established air sections
⇒ 4 air sections
The amount of revision and abolition
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Nishi-ōi Nishi-ōi
30″
HDC HDC
Figure : HDC after improvement
Nishi-ōi Nishi-ōi
HDC HDC
30″
Figure : HDC before improvement
Nishi-ōi station in up line
2′24″ 1′59″
Mehod : Moving and increasing the related signals
Increase
Increase
Move
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Yokohama Yokohama
HDC MDC
40″
Figure : MDC after improvement
Yokohama
HDC MDC
Yokohama
40″
Figure : MDC before improvement
Yokohama station in down line
2′31″
2′20″
Mehod : Moving and increasing the related signals
40″
Increase
Increase
Move
Move
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Yokohama Yokohama
HDC MDC(YG)
40″
Figure : MDC(YG assumption) after improvement
Mehod : YG assumption
Yokohama station in down line for MDC(YG assumption)
2′20″
Yokohama Yokohama
HDC MDC
40″
Figure : MDC after improvement
75(km/h/s)
55(km/h/s)
Speed
D1 2RS 16R 41R13R
2′05″ △13(sec)
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4. Consideration and conclusion
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In order to estimate the result of …
• The delay data was evaluated
every fiscal year from 2007 to 2013
• Data collection period
: From August to February (184 days)
• Delay time is recorded at …
TōkyōUp Line
Ōfuna
Down Line
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Consideration
* 𝑇2, 𝑇5 , 𝑇6 , ~, 𝑇182, 𝑇184 < 1.0* N : Number of days in normal operating condition
𝑇1, 𝑇2 , 𝑇3 , ~, 𝑇183, 𝑇184 (min)
: Delay time per one passenger train per day
MDT =𝑇1+𝑇2+𝑇3+ ~+𝑇183+𝑇184
184(min)
MDT(in NC) =𝑇2+𝑇5+𝑇6+ ~+𝑇182+𝑇184
𝑁(min)
• Mean delay time (MDT)
• Mean delay time in normal operating condition
(MDT(in NC))
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Consideration
1st step
(Feb. 2010)
2nd step(Aug. 2011)
MDT(min)
MDT(in NC)(min)
• MDT(in NC) had risen to some extent after 1st step.
The congestion at Musashi-kosugi station is
supposed to affect the train diagram.
• MDT(in NC) had nearly unchanged after 2nd step.
• MDT has not developed the characteristic tendency.
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Conclusion
• The minimum train headway has been
shortened to be 2'10" and some regular
trains are actually operated at under 2'30"
intervals.
• The remarkable troubles have not ever
occurred and the safe and reliable
transportation service have been provided
in Yokosuka Line.
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Thank you for your attention
Line/Page Original text Corrected text
7/P. 14 "… at the location of 2RS and 16R …"
"… at the location of D1 2RS and 16R …"
Errata of the manuscript !