In 1990, amendments to the Clean Air Act established the Grand Canyon Visibility Transport Commission ( GCVTC ) to advise the US EPA on strategies for protecting visual air quality on the Colorado Plateau.

Visibility may be reduced to 50 metres for days at a time.

Since then, features of HV clothing such as the EN510 quick release standard and the EN471 High Visibility standard, have improved the effectiveness and contributed to improved safety for rail workers.

Visibility in foggy conditions was one of the factors for the development of this type of signal.

On other aircraft ( the Boeing 787, for example ) the HUD guidance computation for Low Visibility Take-off ( LVTO ) and low visibility approach comes from the same flight guidance computer that drives the autopilot.

* CAVOK is an abbreviation for Ceiling And Visibility OKay, indicating no cloud below or the highest minimum sector altitude and no cumulonimbus or towering cumulus at any level, a visibility of or more and no significant weather.

Savi has been the primary provider of active RFID for the U. S. Department of Defense since 1993, and helped build the DoD's In-Transit Visibility network.

She is set to film Visibility for the Motion Picture Corporation of America in 2011.

Early in the 1990s, Thomas introduced the MVP ( which stood for Maneuverability, Visibility, and Protection ); a transit-style school bus, available in front and rear-engine models, the MVP was a lower-cost version of the standard Saf-T-Liner intended to boost sales.

A follow-up e-print by Kastner " On Visibility in the Afshar Experiment " argues that the commonly referenced inverse relationship between visibility parameter V and which-way parameter K does not apply to the Afshar setup, which post-selects for " which slit " after allowing interference to take place.

Organisation Logos was initially registered at the end of 2005 under the name of the Initiative for Visibility of Queer Muslims ( IIVQM ), but shortly after changed its name to Logos and reregistered in 2006.

" A Matter of Visibility: The United Houma Nation's Struggle for Federal Acknowledgment ," in Forgotten Tribes: Unrecognized Indians and the Federal Acknowledgment Process.

* Page Time Viewed / Page Visibility Time / Page View Duration-The time a single page ( or a blog, Ad Banner ...) is on the screen, measured as the calculated difference between the time of the request for that page and the time of the next recorded request.

* Visibility – Since there can be a large number of leaves in a map, it could be quite costly for the hardware to redraw the entirety of them many times a second, because areas not seen would be drawn only to be overdrawn later.

* Visibility Plan ( data plan with voice for postpaid and prepaid ) currently discontinued, replaced by Globe Tattoo.

Visibility continued to be limited, and Greg was never able to get above a thousand feet.

Visibility was at its maximum, the sea was placid with a gentle breeze from the north west, a bright, sunny, clear day.

Visibility was no more than.

Visibility was reduced to a few yards (" It's like you were blind ", commented one observer ), making driving difficult or impossible.

Visibility from the driver's seat and passenger seat was better due to the lower instrument panel design of the front window and a large windshield.

Visibility in the cockpit was so restricted that the pilots nicknamed it the Batcave.

Visibility was improving about 07: 30.

Visibility was poor because the moon had already set, leaving no ambient light and no visible sea horizon.

Visibility from a fox hole was practically zero.

Visibility was so poor he could not always see the dogs harnessed closest to the sled.

Visibility was limited by rain, and Australian casualties soon began to mount.

Visibility to the front and sides was similar to that of an observation car, although rearward vision was almost nil and there were no rear-view mirrors.

Visibility graph analysis was developed from the architectural theory of space syntax by Turner et al.

Visibility was poor due to bad weather, and French machine gunners in the village of Douaumont thought the Germans were French colonial troops returning from a patrol.

* 25 October 2003 Visibility in the harbour was excellent and winds were between 12 and 15 knots ( 22 to 28 km / h ) from the east.

Visibility was so limited that streetlights remained lit throughout the day and motorists needed their headlights to navigate city streets.

Visibility was poor because smoke from Canadian forest fires was blowing across Lake Erie.

Visibility was poor and he mistook the peaks of Taveuni to be separate islands.

Visibility was about 200 feet at the time of the accident.

Visibility can be significantly reduced by becoming greasy, trapping vapour when eating hot food, swimming, walking in rain or rapid temperature changes ( such as walking into a warm building from cold temperatures outside ).

Visibility minimums of 1 / 2 mile ( runway visual range of 2, 400 feet ) are possible with a CAT I ILS approach supported by a ALS, and 3 / 8 mile visibility visual range is possible if the runway has high-intensity edge lights, touchdown zone and centerline lights, and an ALS that is at least long ( see Table 3-5a in FAA Order 8260. 3b ).

In late 1984, the BN commenced the High Visibility study which applied orange and black nose stripes and orange along the cab face on one locomotive followed by two new orders of locomotives: EMD SD40-2, EMD GP50, and EMD SD60 respectively.

Visibility is primarily determined by weather conditions ( see visibility ) and by a vehicle's design.

Visibility can be limited by changing conditions.

Aircraft and vehicles are not allowed in this area when Low Visibility Procedures are in force, since aircraft will be making autolands and therefore the accuracy of the guidance signals provided by the ILS is absolutely critical.

Visibility degradation is caused by the absorption and scattering of light by particles and gases in the atmosphere.

Visibility is reduced by significant scattering from particles between an observer and a distant object.

* In 2000, the Art Gallery Society supported the purchase of drawings Visibility / Invisibility by Jennifer Keeler-Milne and Urban landscape II by Sallie Moffat.

Visibility remained poor in Rabaul town ( 3 – 5 km NW of Tavurvur ) due to ash made airborne by the passage of moving vehicles.