Points: from grades to railway tracks

In everyday speech, a point is a dot, a unit of scoring, a moment in time, or a location on a map. It marks a position or a threshold. In the vocabulary of rail supply and equipment, a point is something that moves. It is a section of rail that can pivot to guide a train wheel from one track onto another, diverting the train without stopping it.

The mechanism is simple in principle but vital to railway operation. Points consist of two movable rails, called the points proper, that sit at an angle to the main running rails. When a train approaches, the points are in one position or the other, aligned with one branch of track. A mechanical or electrical actuator shifts them, and the train's wheels follow the new rail direction. Rail workers say a train "takes the points" when it passes over them, and they refer to the apparatus itself in the plural: you maintain the points, you inspect the points, you oil the points.

The railway borrowed the term from the appearance of the mechanism. The moving rails come to a sharp angle, a point, where they meet the stock rails. That geometric feature gave its name to the whole device. Other languages use different logic: French railways say "aiguille" (needle), German say "Weiche" (switch), but English settled on the pointed end.

Related equipment includes catch points, a safety version. Catch points are installed on steep grades or in yards where a runaway vehicle could cause disaster. Instead of switching a train to another track, catch points derail it intentionally, onto a safe bed of gravel or sand, stopping it before it reaches an occupied area or a main line. Catch points use the same pivoting rail principle as standard points, but they are positioned and angled to shed a train off the track altogether rather than to divert it smoothly.

The term has stayed within railway supply and track infrastructure. Road transport has no equivalent device and no need for the word. Industrial railways, heritage lines, and mainline operators all use the same vocabulary. A point remains a point whether it is manually operated, electrically thrown, or hydraulically actuated.