New vehicle Collision alert (or detection) system may help driving safe

Fig1: New vehicle Collision alert system may help driving safe

According to National Highway Traffic Safety Administration ((NHTSA) research, 99% of all accidents are due to human factor and more specifically, 80% of all driving mishaps are due to driver inattention in the three seconds immediately preceding the accident. With traffic congestion, driver inattention, fatigue and distraction all on the rise, several technologies are an effective new solution to battling the statistics.

Developing on-board automotive driver assistance systems aiming to alert drivers about driving environments, and possible collision with other vehicles has attracted a lot of attention lately. In these systems, robust and reliable vehicle detection is a critical step. Some are some given below:

Excessive approach decision apparatus

In an article entitled "Radar For Car Crash Prevention", Nissan Technical Journal, No. 18, 1982, there is described a conventional excessive approach decision apparatus which utilizes a safety distance that represents the condition where the vehicle can come to a safety stop with a distance spaced away from the vehicle in front when both of the vehicles are decelerated at an acceleration.

Since such a conventional excessive approach decision apparatus decides an excessive approach based upon the distance which permits the vehicle to come to a stop with no collision with the vehicle held at rest in front of the vehicle, however, it is very difficult, if not impossible to produce the alarm in agreement with the driver's sense for an excessive approach without annoying the driver.

Fig2: Vehicle Collision Alert Detection System

Low-speed automatic braking system by Volvo:

Low-speed automatic braking system, which works at speeds of less than 20 miles an hour. That’s the danger zone for urban fender benders in stop-and-go traffic. So the Volvo system employs a light detection and ranging (or LIDAR) system positioned on the windshield just behind the rearview mirror. A laser is aimed a few feet in front of the vehicle and looks for reflections from, say, bumpers and license plates of other vehicles. When it detects that you’re rapidly approaching such a reflection and haven’t made a move to stop, the car automatically brakes to a stop. And then it flashes at you, so that you don’t think something’s wrong with your car.

Forward Collision Warning (FCW) System:

With driver distraction a major factor in traffic accidents and fatalities; Mobileye’s Forward Collision Warning (FCW) System added new stop and go features which is an invaluable onboard companion for any driver who wants the best possible ammunition against rear end collisions. Mobileye FCW™ alerts drivers to both moving and stationary vehicles, while filtering out cars in adjacent lanes that pose no threat. Ever-vigilant regardless of weather or light conditions, Mobileye’s FCW warns drivers about an impending impact up to 2.7 seconds before an imminent collision – providing time for a driver to react to the threat.

Radar Safety Technologies (RST)

A Lebanese-owned company in Troy introduced a collision alert radar system; intends for the FrontAlert system to be used on commercial trucks installed as a small dashboard device that will forewarn the driver when there is a need to stop. The system measures the distance between the truck and the vehicle in front of it and combines it with its speed to estimate how far the driver should apply the brakes.  Alarms go off when speed and closing rate create a danger ahead.

Driving Safety Support Systems (DSSS) by Honda Motor:

Honda Motor Co., Ltd. announced its Driving Safety Support Systems (DSSS) using inter-vehicle and road-to-vehicle communications that provide the driver with visual and audio information on the surrounding traffic environment to alert the drivers of possible driving-related dangers and facilitate greater attentiveness, promoting a more relaxed driving environment and preventing traffic accidents involving rear-end collisions, collisions between turning vehicles and oncoming vehicles, and collisions involving turning vehicles with vehicles passing on the inside.

Blind spot detection system:

This is a system that can identify vehicles or objects within a vehicle’s blind spots and provide an audible warning, a visual warning and/or vibrate the vehicle’s steering wheel or seat if a lane change is attempted. A new Harris Interactive AutoTECHCAST study found that nearly three-quarters (73%) of considerers indicate they prefer that the system warn them, by way of noise or vibration, of the vehicle in their blind spot, but that they would prefer to take the necessary action to avoid the collision.

Lane Departure Warning system:

Lane departure warning detects when a vehicle is wandering out of its lane – without a turn signal being activated – and triggers a warning to the driver that can be audible, visual and/or physical (e.g., vibration in the seat or steering wheel) and prevents drivers from inadvertently entering other lanes. Regarding lane departures, AutoTECHCAST study found the majority (62%) indicated that they prefer a system that warns them their vehicle is drifting but they would prefer to make the necessary maneuver to correct the situation.

Runway surface detection technology:

John F. Kennedy International Airport (JFK) in Jamaica is slated to receive the most advanced airport runway surface detection equipment technology, known as ASDE-X enables air traffic controllers to detect potential runway conflicts by providing detailed coverage of movement on runways and taxiways. ASDE-X uses come from surface movement radar located on the air traffic control tower or remote tower, multi-lateration sensors, ADS-B (Automatic Dependent Surveillance-Broadcast) sensors, the terminal automation system, and aircraft transponders to spot/ track potential collisions.

FrontAlert(TM) Collision Alert System (CAS):

The newly formed safety technology and product company called Radar Safety Technologies, LLC (RST) is announcing today at the Mid-American Trucking Show at the Kentucky Exposition Center, Louisville, Kentucky its new safety product FrontAlert(TM) Collision Alert System (CAS) for Automotive, Recreational, Mining, and Military markets. RST's FrontAlert(TM) (CAS) is a new Collision Alert System for the Commercial Vehicle market that is designed to detect hazards in your vehicle's path and alerts you of a potential collision. The new FrontAlert(TM) (CAS) is available beginning second quarter 2008.

RST's FrontAlert(TM) (CAS) features advanced radar-based technology that is based on Safe Braking Distance. FrontAlert(TM) (CAS) calculates your vehicle speed, distance to the object, and closing speed between your vehicle and the object, and alerts you of a threat or non-threat driving situation. FrontAlert(TM) (CAS) driver display unit illuminates a green light indicating the system is active. When a yellow light illuminates on the driver display, an object has been detected in front of the driver's vehicle. No action is needed by the driver. When a red light and an alert tone activates, FrontAlert(TM) (CAS) is alerting the driver to take caution, decelerate, brake, or take safe evasive action to avoid a collision. Once corrective action has been taken by the driver, FrontAlert(TM) (CAS) resumes normal non- threat status. FrontAlert(TM) (CAS) can give you the extra second you need to respond appropriately, and help prevent costly collisions, injury and even catastrophic loss.
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