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For large diesel locomotives the UIC classification is used. The main limitation of the Whyte Notation in classifying locomotives was that it did not cover non-standard steam locomotive typessuch as Shay locomotives , which use geared trucks rather than driving wheels.

This led to the design of other forms of classification. The most commonly used system in Europe outside the United Kingdom is the UIC classification scheme, based on German practice, which can more completely define the exact layout of a locomotive.

In American and to a lesser extent British working practice, most wheel arrangements in common use were given individual names, often from the name of the first such locomotive built.

For example the type arrangement is named Planet , after the locomotive on which it was first used. This naming convention is similar to the naming of warship classes.

Here is a list of the most common wheel arrangements: in the illustration the front of the locomotive is to the left. Wikimedia Foundation.

Notation — The term notation can refer to: Contents 1 Written communication 1. He is most widely known as the person who developed Whyte notation to describe the different wheel arrangements of… … Wikipedia. Damit… … Deutsch Wikipedia. Am weitesten verbreitet sind die auf der Achsfolge aufbauenden Systeme. Whyte notation. The railroad pocket-book: a quick reference cyclopedia of railroad information. Railway Technical Web Pages.

Retrieved Kalmbach Publishing. New York: Dover Publications. ISBN United States National Park Service. Archived from the original on There are also different nicknames for the different types and forms of wheel arrangements as well.

Because of this, all the numbers in the Whyte notation are even and are never odd. There are numbers in Whyte notation, separated by hyphens -. The first number was always the leading wheels and the last number was always the trailing numbers.

The numbers in the center were the driving wheels, which moved the locomotive. A notation that contains 4 or 5 numbers is a Mallet articulated locomotive. A few wheel arrangements can't be covered by the Whyte notation. Whyte Notation is written to represent the number of wheels, with the three types of wheels separated by hyphens "-". As a result, a locomotive with 2 Leading Wheels, 4 Driving Wheels and 2 Trailing Wheels would be described as a Locomotives without either Leading or Trailing Wheels still have to be accounted for, and so in the example above top middle where the locomotive has just 4 Driving Wheels, the designation is Writer, broadcaster and fan of all things steam Jonanthan Glancey bring his worldwide knowledge and enthusiasm to the latest episode of the We Are Railfans Podcast!

Only 6 'Baby Krocs' remain either as static displays or in operation. This article explains a bit of their history and that of electric railways in Switzerland. All trademarks and copyrights are the property of their respective owners. All rights reserved. Developed and published by DTG.

Visual Guide to Wheel Arrangements Resources. Its Italian classification was written as 2' Bo Bo 2'. For those interested it was a class E 3, V DC electric locomotive.

The next example is a 1-D-1, the D referring to the four coupled driving axles in the centre of the locomotive. This was a 3-phase locomotive from I have not found a design of locomotive with greater than E five coupled axles under one frame. The latter design was adapted from a once popular design of the US. It was more an exercise in weight distribution than anything else.

The non-standard design made it less attractive as a cost effective solution. Different systems for denoting steam loco wheel arrangements were developed in different countries. In the US and UK it was usual to refer to a steam locomotive type by its wheels rather than its axles. The wheel layout was described totally numerically by first the leading carrying wheels, then the coupled wheels including the driving wheels and finally the trailing carrying wheels, in that order, in a system invented by Frederic M.

Whyte in the US in e.