What is the main purpose for railroad-crossing barricade counter weight?

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The cost of an amtrak round trip night travel ticket with one stop is what for 2 adults?

The name says it all "railroad-crossing barricade counter weight"
The term counter weight off sets the weight of the barricade.

Why do we not have an extensive and efficient rail cargo system in the USA?

Yes it does help so that smaller motors etc can be used
but
what most people do not know is that they are balanced to within 30 pounds so that if they are stuck down or up the engagement pin to the motor drive can be removed and the barricade operated manually by a railroad worker so traffic can pass.

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how fast is canada's via rail railroad?

So it can stay up without any other mechanisms such as springs or electric motors.

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what is the C2C rail fare from West ham to Chafford Hundred?

It's used to smack deer in the head who can't comprehend that a train is coming(-;

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Where do the underground trains in London park at night time? Is there one big place for them all?

its just to balance the barricade so it takes less energy to raise and lower it.

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public transport for fife from paisley?

sshazzam nailed it..but while we are on the subject...never trust those crossing arms...especially in wet weather....look both ways before you cross any railroad track...you can expect a train in any direction at anytime....

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Amtrak ticket problems?

BY PLACING A COUNTER WEIGHT ON THE OPPOSING END OF A CROSSING GATE YOU MINIMIZE THE LEVERAGE EFFECT THAT THE WEIGHT OF THE BARRICADE (GATE) HAS AGAINST THE MOTOR THAT MOVES THE BARRICADE UP AND DOWN.
EX. YOU WANT TO LIFT YOUR 100 POUND FRIEND OFF THE GROUND EITHER BY FULCRUM/ LEVER (TEETER TOOTER) OR ROPE AND PULLY (HOIST).
WHICH WOULD BE EASIER:
A. TRY TO DO ALL THE WORK YOURSELF.
B. HAVE ANOTHER 100 POUND FRIEND ON THE SAME SIDE OF THE LEVER OR ROPE AS YOU.
ANSWER- B -THE WEIGHT OF THE 100 POUND FRIEND ON THE SAME SIDE AS YOU, COUNTERS (OFFSETS) THE WEIGHT (COUNTERWEIGHT) OF YOUR FRIEND THAT YOU ARE TRYING TO LIFT. THEY ZERO OR CANCEL EACH OTHER OUT. ALL YOU ( THE MOTOR) HAS TO DO IS TO SET THEM IN MOTION.

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What is a fifth wheel?

to make it easier for the device to operate with less energy

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