TechnologyAugust 30, 2026
underframe
UN-der-frame
Definition
The structural foundation or supporting chassis located beneath the main body of a railway carriage or vehicle.
Etymology
Derived from the English 'under' and 'frame,' the term emerged in the 19th century to describe the underlying support structure or chassis of a wagon or carriage.
In the news
The article uses the term to describe the part of the train where optical sensors look for mechanical defects, such as dragging brake hoses, as the train passes monitoring stations.
Switzerland’s Quiet Rail Revolution in Wheel-Rail Technology
Read the full article ↗https://www.thetraveler.org/