Last Updated：2025/11/29
(rail transport) The steepest uphill gradient in one direction on a section of railway line, which determines the load that can be pulled by one locomotive over that section, according to the power rating of the locomotive. A typical ruling gradient could be 1:50 (2%). The ruling gradient can differ in the other direction on the same section.
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ruling gradient
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Source Word
ruling gradient
Noun
(rail
transport)
The
steepest
uphill
gradient
in
one
direction
on
a
section
of
railway
line,
which
determines
the
load
that
can
be
pulled
by
one
locomotive
over
that
section,
according
to
the
power
rating
of
the
locomotive.
A
typical
ruling
gradient
could
be
1:50
(2%).
The
ruling
gradient
can
differ
in
the
other
direction
on
the
same
section.
Japanese Meaning
鉄道分野において、特定の区間で一方向の最も急な上り勾配を指し、この数値に基づいて機関車が牽引可能な最大荷重が決定される。一般的には、1:50（約2％）などで表現され、逆方向では異なる勾配となる場合がある。
Sense（1）
(rail
transport)
The
steepest
uphill
gradient
in
one
direction
on
a
section
of
railway
line,
which
determines
the
load
that
can
be
pulled
by
one
locomotive
over
that
section,
according
to
the
power
rating
of
the
locomotive.
A
typical
ruling
gradient
could
be
1:50
(2%).
The
ruling
gradient
can
differ
in
the
other
direction
on
the
same
section.
（ plural ）
