Some higher-end models feature motion detection alerts — even when your vehicle is turned off. In some cases, motion within three feet of the vehicle will trigger video to record; others will trigger flashing lights or sounds.

In the "day" position, the driver sees the road behind by reflection on the (rear) metal surface. In the "night" position, the driver sees the dimmer reflection on the (front) glass coating. The light is attenuated in the second mode, which partially compensates the pupillary response. Most rearview mirror screens display at least 140 degrees of visibility in the rear — much more than you can see without a camera. FAQ A rear-view mirror (or rearview mirror) is a, usually flat, mirror in automobiles and other vehicles, designed to allow the driver to see rearward through the vehicle's rear window (rear windshield). CDL Commercial Drivers License Study Guide" (PDF). Illinois Secretary of State. pp.23–24. Archived (PDF) from the original on 1 September 2013 . Retrieved 4 June 2013. Image improvements: Many mirror screens have anti-glare technology to help you see clearly during the day. Additionally, some have night vision settings that improve image quality in low light. Some screens respond to brightness and low light automatically; others must be adjusted manually.

FAQ

History [ edit ] Ray Harroun's Marmon "Wasp" with its rear-view mirror mounted on struts above the car on display in the Indianapolis Motor Speedway Hall of Fame Museum. Rear-view mirror of Harroun's "Wasp" Door mounted Outer Rear View Mirror, a.k.a. ORVM from Driver view Rearview mirror screens often give you a view that’s better than a traditional mirror. Since the camera is mounted in the rear of your vehicle, it eliminates obstructions like headrests from your view. Key considerations A prismatic rear-view mirror—sometimes called a "day/night mirror"—can be tilted to reduce the brightness and glare of lights, mostly for high-beam headlights of vehicles behind which would otherwise be reflected directly into the driver's eyes at night. This type of mirror is made of a piece of glass that is wedge-shaped in cross-section—its front and rear surfaces are not parallel. In 1956, the Civil Aeronautical Administration proposed a rear-view mirror mounted right above the pilot to keep an eye when private aircraft are landing or taxiing on the runway to prevent collisions. [17] Fighter aircraft usually have one or more rear-view mirrors mounted on the front canopy frame to watch out for chasing aircraft. This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. ( March 2009) ( Learn how and when to remove this template message)

Parking lines: Many covet rear cameras because they simplify parking a large vehicle. On-screen parking lines can help you park with confidence, but lines on aftermarket vehicles may not match the width of your vehicle. Some screen sets include adjustable parking lines — a great feature for wider vehicles. Depending on the type of motorcycle, the motorcycle may or may not have rear-view mirrors. Street-legal motorcycles are generally required to have rear-view mirrors. Motorcycles for off-road use only normally do not have rear-view mirrors. Rear-view mirrors come in various shapes and designs and have various methods of mounting the mirrors to the motorcycle, most commonly to the handlebars. Rear-view mirrors can also be attached to the rider's motorcycle helmet. Rabinow, Jacob (18 May 1990). Inventing for Fun and Profit. San Francisco, CA: San Francisco Press. ISBN 978-0-911302-64-6. SD expansion: If your screen and corresponding camera don’t offer enough storage for your liking, look for models with SD card slots. This will help you increase your data space and decrease overwriting.

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Elmer Berger is usually credited with inventing the rear-view mirror, though in fact he was the first to patent it (1921) and develop it for incorporation into production street going automobiles by his Berger and Company. [ citation needed] Augmentations and alternatives [ edit ]

Brevet d'invention: dispositif de miroir avertisseur pour automobiles". Institut national de la propriété intellectuelle. 8 January 1907. Archived from the original on 1 October 2017 . Retrieved 15 October 2017.Federal Size and Weight Regulations". U.S. Department of Transportation. 20 June 2012. Archived from the original on 5 June 2013 . Retrieved 4 June 2013. Some rearview mirror screens display an image as large as your factory mirror, and they often give you an unobstructed view that is clearer than a reflection. Other screens project a smaller image, which allows you to use the uncovered portion as a traditional rearview mirror. Smaller screens are less expensive and allow you to use the mirror to supervise young children in rear seats. Both screen sizes display the same wide viewing angle, but the image itself varies. Attachment Screen quality is important, but it can only display the image transmitted by the camera. Resolution is a big factor if you’re getting a screen that includes a camera. Some sets transmit full HD video (1080p) from both dash and rear cameras; others relay full HD from the front and 720p from the rear. Budget-priced rearview cameras may only take VGA-quality video. Most experts advise, though, that high resolution is more important in a dash camera than in a rear camera. In an accident, dash camera video can provide evidence that helps determine fault and can provide important details such as the make, model, and license plate number of a car. Screen size Standard No. 111; Rearview mirrors". Federal Motor Vehicle Safety Standards. U.S. Department of Transportation. 12 April 2013. Archived from the original on 22 May 2013 . Retrieved 4 June 2013. a b Baker, Mike; Bogel-Burroughs, Nicholas (17 April 2021). "How a Common Air Freshener Can Result in a High-Stakes Traffic Stop". The New York Times. Archived from the original on 17 April 2021 . Retrieved 13 August 2021.