Road-Rail macchina funzionante entro un chiaramente contrassegnato blocco ferroviario, il limite definito dal recinto blu con brani dal vivo al di fuori.
3236 x 2595 px | 27,4 x 22 cm | 10,8 x 8,7 inches | 300dpi
Data acquisizione:
21 settembre 1997
Ubicazione:
Essex, UK.
Altre informazioni:
Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.
The safest way for work teams to carry out repairs or maintenance on railways is to separate workers from trains by arranging for all the lines to be blocked and the power to be switched off. Unfortunately, such ‘green zone’ working is rarely possible (except for major projects) because it would cause unacceptable cancellations and delays to busy rail networks. Therefore, partial blockades are set up which allow trains to run on some lines whilst others are blocked or ‘red zone’ working which involves warning workers of approaching trains in time for them to get clear of the line and into 'positions of safety' well before the train arrives. ‘Red zone’ working requires very stringent safety systems to be put in place. Road-railers are ingenious and specialised self-propelled work vehicles that can be used legally on both roads and railways. Because they can drive on the road, they can gain access to rail work sites more easily than a conventional rail vehicle which may have to be lifted onto the tracks by a crane. Road-railers are usually converted rubber-tyred road vehicles with an additional set of steel rail wheels which can be raised and lowered hydraulically, allowing these vehicles to operate on the rail tracks. Road-railers come in a wide variety of types for transporting people, carrying and excavating materials, inspecting track and can perform a huge variety of tasks when equipped with various handling devices.
