И. А. Курбасова Е. И. Силантьева


TEXT 6. POST OFFICE RAILWAY



Download 1,91 Mb.
bet181/247
Sana02.01.2022
Hajmi1,91 Mb.
#307661
TuriУрок
1   ...   177   178   179   180   181   182   183   184   ...   247
Bog'liq
Курбасова

TEXT 6. POST OFFICE RAILWAY
An interesting example of a fully-automated railway is a two-foot gauge Post Office Railway which runs under the centre of London connecting major sorting offices with the railway termini,. Opened in 1927, it has carried mails day and night through its deep tube tunnels. Mails are carried at a speed of 35 mph in trains which have no one on board to drive or supervise.

Fifty electric units are in use on the Post Office Rail­way, sixteen dating back to 1930 and the remaining 34 built in 1979. These trains take the place of about 2,000 post office cars which would otherwise run on the congest­ed London streets.

To avoid accidents the cars automatically cut off cur­rent from the section immediately behind them. Special tracksicie devices stop the trains just before they arrive at stations and bring them in at a low speed.

The original signalling system is soon to be replaced with solid state interlocking. There are 10 spare electric units being held in store ready for refurnishment should traffic levels require more stock.




Download 1,91 Mb.

Do'stlaringiz bilan baham:
1   ...   177   178   179   180   181   182   183   184   ...   247




Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2024
ma'muriyatiga murojaat qiling

kiriting | ro'yxatdan o'tish
    Bosh sahifa
юртда тантана
Боғда битган
Бугун юртда
Эшитганлар жилманглар
Эшитмадим деманглар
битган бодомлар
Yangiariq tumani
qitish marakazi
Raqamli texnologiyalar
ilishida muhokamadan
tasdiqqa tavsiya
tavsiya etilgan
iqtisodiyot kafedrasi
steiermarkischen landesregierung
asarlaringizni yuboring
o'zingizning asarlaringizni
Iltimos faqat
faqat o'zingizning
steierm rkischen
landesregierung fachabteilung
rkischen landesregierung
hamshira loyihasi
loyihasi mavsum
faolyatining oqibatlari
asosiy adabiyotlar
fakulteti ahborot
ahborot havfsizligi
havfsizligi kafedrasi
fanidan bo’yicha
fakulteti iqtisodiyot
boshqaruv fakulteti
chiqarishda boshqaruv
ishlab chiqarishda
iqtisodiyot fakultet
multiservis tarmoqlari
fanidan asosiy
Uzbek fanidan
mavzulari potok
asosidagi multiservis
'aliyyil a'ziym
billahil 'aliyyil
illaa billahil
quvvata illaa
falah' deganida
Kompyuter savodxonligi
bo’yicha mustaqil
'alal falah'
Hayya 'alal
'alas soloh
Hayya 'alas
mavsum boyicha


yuklab olish