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A box junction in London, pictured from atop the Monument in 1969. A box junction is a road traffic control measure designed to prevent congestion and gridlock at junctions.The surface of the junction is typically marked with a yellow criss-cross grid of diagonal painted lines (or only two lines crossing each other in the box), and vehicles may not enter the area so marked unless their exit ...
Tramway rules returned to the Code in 1994, after the first modern tram systems in Britain had opened.) Motorway driving was included in the fifth edition. The sixth edition, in 1968, used photographs as well as drawings for the first time, and also updated the illustrations of road signs to take the new 'continental' designs into account.
A junction for road vehicles and pedestrians controlled by traffic lights in the UK. The various vehicle and pedestrian movements are separated in either time or space for safety and efficiency. The normal function of traffic lights requires more than sight control and coordination to ensure that traffic and pedestrians move as smoothly, and ...
The set of rules and the physical equipment used to accomplish this determine what is known as the method of working (UK), method of operation (US) or safe-working (Aus.). Not all these methods require the use of physical signals , and some systems are specific to single-track railways.
A British Upper Quadrant semaphore signal. In the days of the first British railways, "policemen" were employed by every railway company. Their jobs were many and varied, but one of their key roles was the giving of hand signals to inform engine drivers as to the state of the line ahead. [3]
Hebden Bridge signal box A number of signal boxes in England are on the Statutory List of Buildings of Special Architectural or Historic Interest. Signal boxes house the signalman and equipment that control the railway points and signals. Originally, railway signals were controlled from a hut on a platform at junctions. In the 1850s, a raised building with a glazed upper storey containing ...
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The first use of a signal box was by the London & Croydon Railway in 1843 to control the junction to Bricklayers Arms in London. [ 1 ] With the practical development of electric power, the complexity of a signal box was no longer limited by the distance a mechanical lever could work a set of points or a semaphore signal via a direct physical ...