visibility range


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visibility range

The horizontal distance (in miles or kilometers) at which a large dark object can just be seen against the horizon in daylight.
References in periodicals archive ?
Then, based on the graph data, the distance, which the pedestrian could have covered while walking in the truck-tractor with a semi-trailer driver's visibility range before he reached the location of hitting, was estimated (Fig.
The runway visibility range instrument on runway 28 that broke down on Saturday will be operational by Monday evening," he said.
The critical states are frequently triggered off by limitation in the visibility range caused by smoke and exceeding the normal concentration of gaseous products of thermal decomposition and combustion.
The Air Force spokesman said, "The visibility range today was 1,500 to 2,000 meters.
According to airport sources, the general visibility at the airport fell below 50 metres and runway visibility range (RVR) dipped to 125 metres.
The Press Trust of India reported that general visibility at the airport had fallen below 100 metres and the runway visibility range was recorded at less than 50 metres, which is below the required minimum of 100 metres for flight operations.
Meanwhile, yellow sand was observed in various areas from the Tohoku to Kyushu regions, making the visibility range in Kagoshima up to 3 kilometers, the agency said.
Visibility range is only truly reduced by the relative depth of the opening (e) to its width (d).
The panel has also advised for upgrading the neighboring airports in Jaipur, Lucknow and Amritsar to the Category-IIIB level of Instrument Landing System that offers a runway visibility range of 150 feet or almost nil visibility condition.
Due to heavy fog visibility range dropped 30 meters in Turkish metropolitan's main roads.