Typically, keeping the sun out required choosing between dark window films, which can impair visibility, or metallic treatments.
We conclude that the distance method is suited to low density species that are easily identified, even when understorey vegetation and terrain severely impair visibility.
Common on all buses is the playing of loud and suggestive music, especially by young bus drivers, graffiti inside the buses (sometimes obscene), polarized windscreens and window glass, and interior advertisements that impair visibility.
Of particular note is that IS1 (reduced visibility, loss of traction, covering of road markings and/or road closures) was previously identified as occurring with thicknesses of ~1 mm or more, due to reduced traction (technically known as skid resistance) and impaired visibility disrupting most transportation types.
In addition, it aims at describing and quantifying road user behaviour in relation to emission levels and fuel consumption, focussing in particular on the effects of driving style, road and road network characteristics, and traffic conditions such as congestion, impaired visibility or adverse weather.
Standing water on the track, which was causing heavy spray and impairing visibility, meant that the race would start behind the safety car and all cars would use the full wet tyres.
The road surface was little more than compacted dust and sharp stones which could be easily kicked up by the cars, and to limit the resulting problem of impaired visibility and punctures the ACF sealed the entire length of the track with tar.
The air and track temperature was at 15 C. Standing water on the track, which was causing heavy spray and impairing visibility, meant that the race would start behind the safety car and all cars, except for Diniz, used wet tyres.
He speaks of a medical intern who stayed on duty though his father worked high in one of the twin towers, of a widow with babe in arms in the front pew of St. Patrick's for her husband's funeral, of the police who demanded for five days that the cardinal wear a gas mask to protect him from the contaminated air at the site but didn't wear their own because the masks impaired visibility.
In another study conducted at the Institute of Transportation Studies, University of California, Delucchi et al. [ 41] estimated impair visibility cost of air pollution based on the USA data for 1990.
