Lisbon is connected by rail and road to the interior of Portugal and to the rest of Europe. The 1.5-mile- (2.4-km-) long 25th of April Bridge, one of the longest suspension bridges in western Europe, has served as the main roadway into the city since it was built in the mid-1960s.
NHTSA estimates that 73% of light vehicles already voluntarily will have rear-view cameras by the final deadline of 2018 and that the cost per vehicle to equip the remainder will be $132 to $142 for a complete system, $43 to $45 to add the camera to a vehicle that already has an adequate display screen.
In order to use the view camera, the photographer was required to set the camera up in the most suitable position to photograph the subject. When ready to take the picture, the photographer would open the shutter of the lens to project the image on a ground glass placed on the rear standard plate in order to focus.