How to Spot a Test Train (and what it is)

A test train is a type of train used to evaluate the condition of the track, the overhead lines, the signals and other equipment on a rail network. These trains are used to gather information that can be used to improve the safety and efficiency of the rail system.

Specially Equipped

Test trains can be equipped with a variety of sensors, including laser scanners, video cameras, and ultrasonic devices, which are used to measure the condition of the track and other equipment. They can also carry equipment that simulates the weight and movement of a passenger or freight train, which allows engineers to evaluate the track’s ability to handle different loads.

Run at Night

Test trains are typically operated by the railway’s own testing department or by specialized testing companies. They are often operated at night or during off-peak hours to minimize disruption to passenger and freight services. Test trains are an essential part of maintaining and improving the safety and efficiency of the rail network, as they allow engineers to identify and correct problems before they can lead to accidents or delays.

A test train can be doing a variety of activities when spotted by a trainspotter. Some of the most common activities include testing new or refurbished rolling stock, testing new signalling systems, checking track conditions, testing new equipment, and conducting speed tests. Test trains can also be used for training purposes, such as training new drivers or conducting emergency response exercises. Overall, test trains are an important part of maintaining and improving railway infrastructure and equipment, and their sighting can be an exciting experience for railfans.

How to Identify a Test Train

Identifying a test train can be a challenge for Railfans since they may not always be clearly marked or follow a specific schedule. However, there are a few things that Railfans can look out for to identify a test train:

1. Unusual or unique features: Test trains often have unusual or unique features that distinguish them from regular passenger or freight trains. These can include additional instrumentation, specialized equipment, or even different shapes or sizes of the train cars themselves.
2. Different liveries: Test trains may also have different liveries than regular trains. In some cases, they may have no livery at all, with a plain white or silver exterior.
3. Lack of passenger or freight cars: Test trains are typically composed of locomotives and a few specialized cars, rather than the long strings of passenger or freight cars that are typical of regular trains.
4. Non-standard operating patterns: Test trains may operate on non-standard schedules or routes, and may travel at different speeds or with different stopping patterns than regular trains.

Identifying a test train requires a keen eye and an understanding of the unique features and operating patterns that distinguish them from regular trains.

What Tests a Test Train Performs

Test trains are used to perform various tests on railway infrastructure, rolling stock, and other equipment. The specific tests carried out by test trains may vary depending on the purpose and requirements of the test. Here are some examples of the tests that are commonly carried out by test trains:

1. Track geometry and alignment testing: Test trains equipped with sensors and cameras are used to measure the geometry and alignment of the tracks, including the curvature, super-elevation, and vertical alignment.
2. Traction and braking tests: Test trains are used to evaluate the performance of locomotives, traction motors, and braking systems. These tests may include measuring the acceleration, braking distance, and stopping distance of the train.
3. Load testing: Test trains are used to test the weight-bearing capacity of the tracks and bridges, as well as the ability of the locomotives to haul heavy loads.
4. Signaling and communications testing: Test trains are used to test the performance of the signaling and communications systems, including track circuits, signals, and train-to-ground communications.
5. Noise and vibration testing: Test trains equipped with microphones and accelerometers are used to measure the noise and vibration levels of trains and track infrastructure.
6. Pantograph and overhead line testing: Test trains equipped with special equipment are used to test the performance of pantographs and overhead lines, including the contact force and wear of the overhead wire.

These tests are crucial for ensuring the safety, reliability, and efficiency of railway operations, and are carried out by various organizations, including railway companies, research institutions, and regulatory bodies.

Global Manufacturers of Test Trains

There are several global manufacturers of test trains, each with their own specialties and areas of expertise. Some of the most important manufacturers include:

1. Siemens Mobility: A leading manufacturer of high-speed trains, Siemens Mobility also produces test trains for a range of applications, including safety testing and measuring track parameters.
2. Alstom: Another major manufacturer of high-speed trains, Alstom also produces test trains for a variety of applications, including testing new technologies and conducting performance tests.
3. Bombardier Transportation: A global leader in rail technology, Bombardier Transportation produces a range of test trains for various applications, including testing new technologies and conducting safety tests.
4. Stadler Rail: Specializing in the production of innovative rolling stock, Stadler Rail also produces test trains for a range of applications, including performance testing and measuring track parameters.
5. CRRC Corporation: The world’s largest rolling stock manufacturer, CRRC Corporation produces test trains for a variety of applications, including safety testing and measuring track parameters.

These manufacturers play an important role in the development and testing of new rail technologies and in ensuring the safety and reliability of rail systems around the world.

Sleeper Car on a Test Train?

It is possible for a sleeper car to be attached to a test train, depending on the nature of the tests being conducted. Some tests may require the train to travel long distances or overnight, and in those cases, a sleeper car may be necessary for crew members to rest. However, not all test trains will have a sleeper car attached, and it ultimately depends on the specific needs of the testing program.