File:Sinal avançado ferroviário em Portugal (vermelho e amarelo).jpg
![File:Sinal avançado ferroviário em Portugal (vermelho e amarelo).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Sinal_avan%C3%A7ado_ferrovi%C3%A1rio_em_Portugal_%28vermelho_e_amarelo%29.jpg/371px-Sinal_avan%C3%A7ado_ferrovi%C3%A1rio_em_Portugal_%28vermelho_e_amarelo%29.jpg)
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Summary
DescriptionSinal avançado ferroviário em Portugal (vermelho e amarelo).jpg |
Português: Um sinal avançado ferroviário numa ponte de betão em Portugal, que passa sobre a ria de Aveiro e faz parte do ramal ferroviário do porto da mesma localidade.
O sinal tem dois focos luminosos, apagados: vermelho a meio e amarelo em baixo. Apesar de haver espaço acima para instalar um terceiro foco de cor verde, este nunca viria a ser utilizado no contexto em que o sinal se encontra, pelo que foi omitido. Debaixo dos focos, há uma seta a apontar para a esquerda. Isto indica que o sinal está instalado à direita da via férrea, contrário ao habitual, que seria à esquerda. Mais abaixo, há uma placa com a identificação deste sinal: "SA 31", abreviação de "Sinal Avançado n.º 31". Os postes destes sinais são sempre pintados às listas brancas e pretas com 30 cm de altura.English: A distant signal on a concrete bridge in Portugal, crossing over the Aveiro Lagoon. It is a part of the branch rail line going to the port of Aveiro.
This signal has two lights, turned off in the picture: red on top and yellow on the bottom. There is a slot on top to accomodate a green light; however, because there is no use for such a light in this context, it has been omitted. Under the lights, there's an arrow pointing left, indicating that this signal is installed on the right side of the track. This is contrary to the usual practice in Portugal of installing signals to the left of tracks. Further below, there's a plaque identifying this signal: "SA 31", short for "distant signal #31". The poles of every distant signal is painted with black-and-white stripes with a height of 30 cm each. |
Date | |
Source | Own work |
Author | HedgiePT |
Camera location | 40° 39′ 16.52″ N, 8° 38′ 16.94″ W ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Captions
Items portrayed in this file
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40°39'16.520"N, 8°38'16.944"W
15 October 2020
image/jpeg
0.00022109219544550077 second
1.79
4.74 millimetre
100
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:10, 31 October 2020 | ![]() | 1,133 × 1,830 (266 KB) | wikimediacommons>HedgiePT | Uploaded own work with UploadWizard |
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Camera manufacturer | Xiaomi |
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Camera model | Redmi Note 8T |
Exposure time | 1/4,523 sec (0.0002210921954455) |
F Number | f/1.79 |
ISO speed rating | 100 |
Date and time of data generation | 15:54, 15 October 2020 |
Lens focal length | 4.74 mm |
Latitude | 40° 39′ 16.52″ N |
Longitude | 8° 38′ 16.94″ W |
Altitude | 56.543 meters above sea level |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Windows Photo Editor 10.0.10011.16384 |
File change date and time | 23:35, 30 October 2020 |
Y and C positioning | Centered |
Exposure Program | Not defined |
Exif version | 2.2 |
Date and time of digitizing | 15:54, 15 October 2020 |
Meaning of each component |
|
APEX shutter speed | 12.143 |
APEX aperture | 1.67 |
APEX brightness | 8.92 |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 356990 |
DateTimeOriginal subseconds | 356990 |
DateTimeDigitized subseconds | 356990 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | 0 |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 0 mm |
Scene capture type | Standard |
GPS time (atomic clock) | 14:54 |
GPS date | 15 October 2020 |