How to Choose a Blind Spot & Backup Warning System

Know how the device mounts on your vehicle.

Camera and sensor systems that are mounted on the vehicle’s bumper or bodywork may necessitate drilling. They may not be the best choice if you lease your vehicle.

If you have a hitch, you can consider a model that mounts in the trailer-hitch receiver. But you would have to remove the system to use your hitch.

Other camera and sensor models mount on the license-plate frame. But some states prohibit frames because they can obscure the plate.

Within types, features vary. This is especially true with the sensor models we tested. The ultrasonic systems were generally the most sensitive, but their performance was adversely affected by rain, snow, or other inclement weather.

The microwave-based sensor systems we tested were not affected by weather but are less sensitive as a group. They also don’t warn the driver unless the vehicle or object behind it is moving.

The display quality of the camera-based models is very good, although it doesn’t match that of the larger screens on some carmakers’ systems. Most of the system displays turn on when the vehicle shifts into reverse, but one, the Audiovox, must be turned off and on manually.

LaneFX proven better solution to the blind spot problem than stick-on convex blind spot mirrors

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Top 5 Auto Safety Technologies

Which of the often-expensive new technology might really save your life? Cars and trucks have become a lot safer in the past decade, but some 43,000 people still die every year on U.S. highways. To be sure you and your family do not wind up among these statistics, you want the latest and best auto safety equipment available when you buy a new car. But unless you can afford a luxury car--where most safety gear will be standard--you will have to make choices about how much to spend on optional auto safety equipment.

Some state-of-the-art auto safety devices--such as blind spot detection systems --aim to help you survive once an accident happens. Others--even better--help to control skids and other dangerous situations, aiming to avoid accidents entirely. To stay safe, you ideally need both preventive and protective equipment. New auto safety gear may be especially important if you are thinking about buying a sport utility vehicle (SUV).

J.D. Power & Associates' Consumer Ratings of Top 5 Auto Safety Technologies:

1. Tire-pressure monitoring
2. LaneFX style blind-spot detection / side assist / collision warning
3. Lane-departure warning
4. Emergency brake assist/collision mitigation
5. Rearview backup camera
   

ParkFX is the 360-Degree Backup Solution That's Less Costly Than Backup Sensors, Park Assist and Rearview Cameras

Deaths increase. Ninety-one children were killed in 2003 by drivers who didn’t see them while backing up, according to Kids and Cars ( www.kidsandcars.org ), a nonprofit organization working to improve child safety around vehicles. Those deaths represented a 57 percent increase from 2002. During the first six months of 2004, more than 40 deaths have been attributed to backover accidents, many involving vehicles with large blind spots.

Kids and Cars compiles these statistics; the federal government does not track such incidents. Janette Fennell, president of the organization, believes that backover accidents are underreported and that the actual number of children killed or injured is much higher.

Blind spots grow with vehicle size. A likely reason for the increase in injuries is that minivans, pickups, and SUVs account for more than half of all vehicles sold. Many have large rear-view blind spots.

Last year, Consumer Reports began measuring the blind spot of each vehicle we test, checking the distance for short drivers (5 feet 1 inch tall) and for those of average height (5 feet 8 inches tall). The biggest blind spot: 51 feet for a short driver in a Chevrolet Avalanche pickup. But even small sedans can have blind spots of more than 40 feet. We regularly update vehicle blind-spot information, which is available on this site free of charge in The problem of blind spots.

Systems other than ParkFX combine a camera with sensors, so we tested each system independently; it is listed with camera systems in the Ratings.

All the systems we tested are potentially useful. They’re a good complement to looking around the vehicle before entering, and checking the rear window and rear-view mirror just before and while moving in reverse.

Introducing LaneFX - The World's First Active Blind Spot Exposure System

Take the Safer Lane Change Alternative for a Test Drive Online

The blind spot mirrors mechanism used by motorists is an entirely manual task. As part of basic driver education, drivers are taught to check their Blind Spot Zone before executing a lane change by turning the driver’s head by as much as 90 degrees in the direction of the desired lane check/change.

This manual technique to the persistent Blind Spot problem is inherently flawed in the following ways:

1. The driver is required to direct his / here direction away from the road ahead.
   The head turning task is strictly voluntary to the driver. Driver fatigue or low alertness levels can contribute to ignoring or neglecting to perform this manual check when changing lanes.
   Human perception of sight ahead is based on a concept of continuity.
2. Any product that eliminates or reduces FOR Adaptation Time can provide significant benefits in collision avoidance. In normal highway traffic flows, 280-1,200 milliseconds of FOR Adaptation Time translate into 124 feet of advance emergency stopping distance.
3. Vehicle designs vary widely. Some vehicles have severely restricted side view through and behind the driver side B-pillar. This occurs most commonly in some sports cars and convertibles. Similarly, tall SUVs, while having ample viewing room up to the B-pillar on the driver side, have impeded blind spot mirrors to their relatively large dimensions, including height. In essence, any B-pillar or height design issues inherently limit the side and rearward view through the driver’s side window. This consequently further limits the reliability and efficiency of conventional Blind Spot checking mechanism in preventing avoidable lane change collisions.

More than 2,400 children are accidentally backed-up over each year in the U.S.

And of those, more than 100 die. With the proliferation of SUVs and mini-vans, drivers aren't aware of the enormous rear view blind spots that prevent them from seeing what's behind them, especially small objects, animals, people, and children. Some of these blind spots are even greater than the length of an average driveway! Senators Hillary Clinton (D-New York) and John Sununu (R-New Hampshire) have recently proposed legislation requiring the U.S. Department of Transportation to issue regulations aimed at reducing accidents that frequently kill or injure children in cars. But until that legislation is passed, it's up to the driver to protect their loved-ones and prevent a tragedy by using a Park Assist system or a backup camera.

In fact, the Centers for Disease Control and Prevention estimated 2,767 people were treated in emergency rooms from July 2000 through June 2001 because of backovers. "This is a huge problem," Fennell said. "A lot of [the problem] is due to the change in our vehicle mix" that has more people driving tall-profile vehicles, she said.

Indeed, Fennell's research indicates that "in 60 percent of the [backover] cases, it's a truck, van or SUV that's involved," Fennell said. The reduced rearward visibility is caused by the design and tall profile of SUVs, pickup trucks and even vans.

The top edge of the tailgates and liftgates in these vehicles typically sits high and so do the vehicles themselves. This means that unaware children and small-stature adults and anything not tall enough to be visible in the rear window glass might be run over as the vehicle is backing up.

Consumers can choose from a wider range of aftermarket vehicle-backup systems since our last report, including new and improved designs.

All such systems are intended to help drivers detect objects within the blind spot behind the vehicle.

New are camera systems such as the Audiovox and ParkFX we tested that offer a “picture in the mirror” feature. The display is on a mirror that fits on top of or replaces the existing rear-view mirror, so you don’t have to choose between looking at the display and at the rear-view mirror while backing up. ParkFX also combines a camera with an audible sensor, so you can see and hear potential trouble. We would like to see more backup warning systems on the market that combine camera and sensor technologies.

Backup systems are typically marketed as parking aids, not safety equipment. But our tests show that the camera models can also help drivers avoid backover-accident injuries and fatalities.

ParkFX is the 360-Degree Backup Solution and it's Less Costly Than Backup Sensors, Park Assist and Rearview Cameras

Deaths increase. Ninety-one children were killed in 2003 by drivers who didn’t see them while backing up, according to Kids and Cars ( www.kidsandcars.org ), a nonprofit organization working to improve child safety around vehicles. Those deaths represented a 57 percent increase from 2002. During the first six months of 2004, more than 40 deaths have been attributed to backover accidents, many involving vehicles with large blind spots.

Kids and Cars compiles these statistics; the federal government does not track such incidents. Janette Fennell, president of the organization, believes that backover accidents are underreported and that the actual number of children killed or injured is much higher.

Blind spots grow with vehicle size. A likely reason for the increase in injuries is that minivans, pickups, and SUVs account for more than half of all vehicles sold. Many have large rear-view blind spots.

Last year, Consumer Reports began measuring the blind spot of each vehicle we test, checking the distance for short drivers (5 feet 1 inch tall) and for those of average height (5 feet 8 inches tall). The biggest blind spot: 51 feet for a short driver in a Chevrolet Avalanche pickup. But even small sedans can have blind spots of more than 40 feet. We regularly update vehicle blind-spot information, which is available on this site free of charge in The problem of blind spots.

Systems other than ParkFX combine a camera with sensors, so we tested each system independently; it is listed with camera systems in the Ratings.

All the systems we tested are potentially useful. They’re a good complement to looking around the vehicle before entering, and checking the rear window and rear-view mirror just before and while moving in reverse.