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Observation car

Observation car is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Observation car rather than just read about it. In short: An observation car/carriage/coach (in US English, often abbreviated to simply observation or obs) is a type of railroad passenger car, generally operated in a passenger train as the rearmost carriage (the same as a caboose), with windows or a platform on the rear of the car for passengers' viewing pleasure. The cars were nearly universally removed from service on American railroads beginning in the 1950s as a cost-c…

Observation car — main illustration
Observation car — illustration

Key takeaways

  • Observation car belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Observation car to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Observation car from memory before moving on to harder problems.

Reference excerpt

An observation car/carriage/coach (in US English, often abbreviated to simply observation or obs) is a type of railroad passenger car, generally operated in a passenger train as the rearmost carriage (the same as a caboose), with windows or a platform on the rear of the car for passengers' viewing pleasure. The cars were nearly universally removed from service on American railroads beginning in the 1950s as a cost-cutting measure in order to eliminate the need to "turn" the trains when operating out of stub-end terminals. The push-pull mode of operation removes this limitation. In Europe, various trains are now fitted with observation cars at either or both ends.

Configuration The main spotting feature of observation cars is at the "B" end (tail) of the car; the walls of lightweight and streamlined cars usually round together to form a tapered U shape, smoothly or with a door, and larger panoramic windows were installed all around the end of the car. On older heavyweight cars, the rear end of the car consisted of an enlarged, canopied porch-like open vestibule platform area, with the door and enlarged windows set back into the car, giving wind-wing shelter from the draft. Whether old or new there was frequently a large open lounge in the B end where passengers could enjoy the view as they watched the track recede into the distance, and usually (but not always) equipped as a club car with a bar or buffet where soft drinks, cocktails and snacks could be purchased. This differs from non-revenue business cars or private varnish, which may have featured (starting with the A end;) the normally locked center communicating door to a corridor along one side, leading to the salon with doors to a pantry and small galley which was often convertible to a dormitory for the chef and porter/steward at night with cutting board covering a sink, a combination oven/stove/hot-water-tank/steam-heating-boiler and diminished side door for loading supplies, then a private restroom/bathing-room, one or two deluxe private rooms for a personal secretary perhaps and the line's vice president, a locked china/silver/liquor cabinet along the final dividing wall facing a large open multipurpose salon. The salon was often fitted with fold down overhead bunks above a retractable dining/conference table over sub-deck storage, a conductor's desk with secured storage for train log, wine log, and merchant's account books along with relevant gauges such as air pressure and speedometer at the track inspection viewing window recessed behind the expanded observation platform, which was fenced with opulent railing supporting an (optional) illuminated drumhead at the B end. Fresh drinking water, grey water, kerosene/fuel and other tanks crowded beneath the floor sill competed for space with heating/cooling, axle powered mechanical equipment, shore-power batteries and equipment/tool storage bins to support a self-sustaining/self-reliant car whether on the road or on a siding while making track orders. This variety of features is easy to spot with a variety of window placement and sizes, while observation car windows tend to be more uniform in size and placement. Among North American railroads, their observation cars often featured any of a variety of upcharge revenue seating, reserved sitting/drawing rooms or sleeper roomettes in the forward section, in the form of reclining coach seats, plush parlor car chairs near side tables or bedrooms and the occasional crew dormitory, such configurations varying greatly between railroads. A lighted drumhead adornment, usually indicating the name of the train or the name/logo of the railroad would invariably (except on the Milwaukee Road, see below) be hung from the tail end of the observation car. Some early trains offered two observation cars: a traditional enclosed type for its compartment or "first class" passengers and an open type resembling a flat car for its tourist class riders.

History When passenger trains were still the preferred mode of intercity transportation in America, observations often were used by those campaigning for public office, especially for the Presidency of the United States such as United States Railcar No. 1, the Ferdinand Magellan. On a whistle stop train tour the candidate's train would pull into town and stop with the observation end at the station, then the candidate would appear on the observation platform to deliver his "stump speech". The observation platform made a perfect temporary stage for just such an event. Like political candidates, famous personalities such as members of a royal family or film stars would use the open observation car end as a stage from which they would greet well-wishers and fans during public tours. In more recent years, presidents Jimmy Carter, George H. W. Bush, Bill Clinton, and Barack Obama have used a heavyweight observation car built by the Pullman Standard Company in 1930. This car is the Georgia 300.

Industrial design

… excerpt ends here. Continue reading the full article.

Illustrations

Observation car: A heavyweight observation on display at the Illinois Railway Museum
A heavyweight observation on display at the Illinois Railway Museum
Observation car: LNWR observation car No 1503 at Kingscote, Bluebell Railway
LNWR observation car No 1503 at Kingscote, Bluebell Railway
Observation car illustration
Observation car illustration
Observation car illustration

Worked examples

Example 1 — a first encounter with Observation car

Start with the simplest possible case. Write down what Observation car claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Observation car before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Observation car ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Observation car

In research
Observation car appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Observation car in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Observation car is common in secondary-school and first-year university syllabi. It links to neighbouring topics Observation, Passenger railroad cars, so understanding it makes those chapters shorter.
In everyday life
Look for Observation car outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Observation car in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Observation car means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Observation car out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Observation car in simple terms?

An observation car/carriage/coach (in US English, often abbreviated to simply observation or obs) is a type of railroad passenger car, generally operated in a passenger train as the rearmost carriage (the same as a caboose), with windows or a platform on the rear of the car for passengers' viewing…

Why does Observation car matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Observation car?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Observation car.

Tags

  • Observation
  • Passenger railroad cars

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