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.
You don't need to buy a new car to get a back-up camera, though, or spend a lot to add one to an existing vehicle. Retailers such as CarToys, Best Buy and Amazon.com sell aftermarket systems for less than $15 for a bottom-of-the-line stand-alone camera for vehicles that have existing in-dash displays.ack-up cameras send images to a display through wires inside the car, or in the case of some aftermarket equipment, wirelessly, using radio waves or a Bluetooth connection. Automakers configure back-up cameras to transmit images to a vehicle's built-in dashboard display or rearview mirror.