Compare Backup Sensors & Cameras to ParkFX for the Most Reliable Backup Warning Technology

Not all reversing aids are equal. The sensing technology and the indicating method are critical to your driving safety.

How A Park Assist System Alerts You

One option is video, which at first seems like a great choice. But one major flaw with having a video camera affixed to the back of your car with a monitor on your dashboard is that it also forces you to look forward while backing up. That can disturb your perception, your reaction time, and feel very unnatural. They are also extremely expensive, and you'll pay thousands of dollars to have a video system attached to your car, whether from the dealer or an aftermarket supplier.

Compare that to other bargain basement devices which actually have LED displays (little red lights) on your dashboard. These are cumbersome -- almost useless -- for much the same reason as video: when you drive in reverse, you naturally look behind you, and you'll never see the little red lights. They are also hard to read in bright sunlight.

Some other bargain technologies use a tone which beeps more rapidly as you get closer to an obstacle. You can at least hear the relative distance just by listening to the beeps, but you have to practice a bit to really understand how far you are from danger.

That's why an audible voice sensor is best. It tells you in a spoken voice exactly how far away you are. Not only do you not have to awkwardly look forward at your dashboard, you'll know without guessing how much further you can safely back up.

How A Reversing Aid Detects Objects

If you've never seen or used a reversing aid, you might be surprised at how technically advanced they actually can be.

Reversing aids use a variety of technologies to sense an object behind the car. Some units use Doppler radar, and others use infrared sensors, but by far the most accurate method of detection is the one the U.S. Navy uses on its submarines: sonar.

Sonar can operate in any weather, including direct sunlight or rain. And it doesn't require that the car be moving in order to sense an obstruction.

Compare Backup Sensors & Cameras to ParkFX

Get the Latest Information on the Most Reliable Backup Warning Technologies

Not all reversing aids are equal. The sensing technology and the indicating method are critical to your driving safety.

How a park assist system alerts you

One option is video, which at first seems like a great choice. But one major flaw with having a video camera affixed to the back of your car with a monitor on your dashboard is that it also forces you to look forward while backing up. That can disturb your perception, your reaction time, and feel very unnatural. They are also extremely expensive, and you'll pay thousands of dollars to have a video system attached to your car, whether from the dealer or an aftermarket supplier.

Compare that to other bargain basement devices which actually have LED displays (little red lights) on your dashboard. These are cumbersome -- almost useless -- for much the same reason as video: when you drive in reverse, you naturally look behind you, and you'll never see the little red lights. They are also hard to read in bright sunlight.

Some other bargain technologies use a tone which beeps more rapidly as you get closer to an obstacle. You can at least hear the relative distance just by listening to the beeps, but you have to practice a bit to really understand how far you are from danger.

That's why an audible voice sensor is best. It tells you in a spoken voice exactly how far away you are. Not only do you not have to awkwardly look forward at your dashboard, you'll know without guessing how much further you can safely back up.

How a reversing aid detects objects

If you've never seen or used a reversing aid, you might be surprised at how technically advanced they actually can be.

Reversing aids use a variety of technologies to sense an object behind the car. Some units use Doppler radar, and others use infrared sensors, but by far the most accurate method of detection is the one the U.S. Navy uses on its submarines: sonar.

Sonar can operate in any weather, including direct sunlight or rain. And it doesn't require that the car be moving in order to sense an obstruction.

Key Strategies for Total Driver On-Road Awareness

Defensive Driving is the Number One Key to Safe Driving Habits

If you've been out on the roads, you know that not everyone drives well. Some people speed aggressively. Others wander into another lane because they aren't paying attention. Drivers may follow too closely, make sudden turns without signaling, or weave in and out of traffic.

Aggressive drivers are known road hazards, causing one third of all traffic crashes. But inattentive driving is becoming more of a problem as people "multi-task" by talking on the phone, eating, or even watching TV as they drive. We can't control the actions of other drivers. But learning defensive driving skills can help us avoid the dangers caused by other people's bad driving.

Skills That Put You in Control

Before you get behind the wheel of all that glass and steel, here are some tips to help you stay in control:

Stay focused. There are a lot of things to think about when driving: road conditions, your speed, observing traffic laws and signals, following directions, being aware of the cars around you, checking your mirrors - the list goes on. Staying focused on driving - and only driving - is key.

Distractions, like talking on the phone or eating, make a driver less able to see potential problems. It's not just teen drivers who are at fault: People who have been driving for a while can get overconfident in their driving knowledge and let their driving skills get sloppy. All drivers need to remind themselves to stay focused.

Stay alert. Being alert (not sleepy or under the influence) allows you to react quickly to potential problems - like when the driver in the car ahead slams on the brakes at the last minute. Obviously, alcohol or drugs (including prescription and over-the-counter drugs) affect a driver's reaction time and judgment. Driving while tired has the same effect and is one of the leading causes of accidents. So rest up before your road trip.

Watch out for the other guy. Part of staying in control is being aware of the drivers around you and what they may suddenly do so you're less likely to be caught off guard. For example, if a car speeds past you on the highway but there's not much space between the car and a slow-moving truck in the same lane, it's a pretty sure bet the driver will try to pull into your lane directly in front of you. Anticipating what another driver may do prepares you to react.

Seven Secrets to Total Driving Awareness

When you drive defensively, you're taking control of the situation and keeping your eyes open for aggressive or inattentive drivers who might cause an accident. Here are seven easy things you can do:

1. Think safety first. Avoiding aggressive and inattentive driving tendencies yourself will put you in a stronger position to deal with other people's bad driving. Leave plenty of space between you and the car in front. Always lock your doors and wear your seatbelt to protect you from being thrown from the car in a crash.
2. Be aware of your surroundings. Check your mirrors frequently and scan conditions far ahead of you. If a vehicle is showing signs of aggressive driving, slow down or pull over to avoid it. If the driver is driving so dangerously that you're worried, try to get off the road or highway by turning right or taking the next exit if it's safe to do so.
3. Assume the worst. Assume that drivers will run through red lights or stop signs and be prepared to react. While driving, imagine that other drivers (especially truck drivers) don't see you when you are making your way into their path. Also, keep an eye on pedestrians and pets along the road.
4. Stay cool, calm, and collected. It's best to avoid making eye contact with aggressive drivers. As hard as it can be, ignore any aggressive facial or hand gestures. And don't race aggressive drivers - you run the risk of inciting their road rage. Other drivers do stupid things. The best drivers don't get mad or try to get even.
5. Get the authorities involved. If you see an aggressive driver or trouble ahead, get to a safe place to pull over and call authorities or the police. Any information you can provide - a description of the vehicle, its license plate number, the direction it's going - will be helpful. Some areas allow you to use your cell phone to call the appropriate authorities with special numbers like #77. If an aggressive driver crashes or causes an accident, try to stop safely a good distance from the scene. Wait for the police to arrive so that you can tell them about the aggressive behavior you witnessed.
6. Don't drive if you are under the influence or very sleepy. Alcohol, illegal drugs, and some prescription medications affect a person's judgment, including the ability to make important braking and steering decisions on the road. That means you'll be less able to react quickly and drive defensively. Sleepy drivers can be just as bad as intoxicated drivers, so make frequent rest stops or let a friend drive if you're tired.
7. Don't take risks. When in doubt, don't pass. And keep a safe following distance. That way you can avoid a collision, stay in your lane, and not get rear-ended if the driver in front of you slams on the brakes.

If you're interested in taking a full defensive driving course, contact your state's Department of Motor Vehicles. All states keep a list of defensive driving courses that are approved by the state - even some that are online. They cost money, but some insurance companies give people who've taken the course a discount in insurance rates.

Happy (defensive) driving!

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.

Are You Blind To Backup Danger?

Drivaware and Safe4Kids Tests Show Larger Vehicles Have Larger Blind Spots

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.

How To Avoid Car Gadgets & Choose the Right Park Assist Technology for Your Driving Safety

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.