While the warning light in the dash will be shaped like a cup of coffee, the technology in the 2013 Ford Explorer may be a lot more valuable. Ford is introducing new lane keeping technologies, including a system that can help detect drowsy drivers, to help them stay alert and in their lane.
The innovative Lane Keeping System has three unique features designed to help drivers stay in control behind the wheel: Driver Alert System, Lane Keeping System and Lane Keeping Aid.
Driver Alert System
The Driver Alert System is designed to help alert drowsy drivers by monitoring the vehicle’s movement compared to lane markings that are tracked by a camera mounted on the windshield. If the system detects a driving pattern consistent with a drowsy driver, a first-level chime will sound and a coffee cup warning will appear on the dashboard instrument cluster to recommend the driver take a break.
If the driver does not respond to this alert and the system continues to sense the driver is fatigued, another warning and chime will be issued. Drivers can monitor their condition on the dashboard at any time, even without receiving warnings. If they approach the yellow warning range, they should rest as soon as possible.
All information is reset as soon as the driver stops and either opens the door or turns off the engine. More than 40 percent of Americans say they have fallen asleep or nodded off while driving, according to a survey conducted by the AAA Foundation for Traffic Safety.
Lane Keeping Alert
The Lane Keeping Alert is designed to help drivers avoid unintentional lane changes. When the system detects the vehicle drifting close to lane markings, it will alert the driver through a vibration in the steering wheel to naturally direct the driver’s attention to where it is required.
This provides the driver with valuable time to react and steer the vehicle back into its lane. To calculate the lane position, Lane Keeping Alert uses data from the front camera on the windshield. A display in the dashboard instrument cluster lets the driver know when the system is operational as not all roads are well-marked.
Lane Keeping Aid
Lane Keeping Aid takes this technology even further by providing steering torque to alert the driver of the need to steer back toward the center of the lane. The system calculates the amount of steering required based on factors such as the distance to the lane markings, yaw angle and curve radius determined from the front camera and other sensors in the vehicle.
If the driver prefers, the Lane Keeping Alert can work in combination with the Lane Keeping Aid. When the driver signals, the system is deactivated so that the vehicle can change lanes without intervention. The driver can override the Lane Keeping Aid at any time through counter steering, hard braking or fast accelerating.
In these cases, the system recognizes that the driver has intentionally changed lanes. While steering torque is being applied, the system also can display a warning if a torque sensor determines the driver may not have his or her hands on the steering wheel based on the driver’s steering efforts.
If the system still detects the driver’s hands may be off the wheel after a few seconds, an audible chime is played to help prevent drivers from inappropriately relying on the Lane Keeping Aid.
The sensitivity of the setting can be adjusted between normal and increased, which moves the warning zones in closer to the center of the lane. The intensity of the steering wheel vibrations can be adjusted as well between low, medium and high. The last-known setting for each selection is stored so it does not have to be set each time the system is activated.
The system features must be turned on by the driver, and will stay on unless the driver turns them off. The customer chooses which feature is preferred: alert, aid or both. The systems work both day and night with low-beam headlights.
Dashed lines, like those on highways, will appear when the system is activated. A green line indicates the system is available and ready to provide a warning. A flashing yellow line means the system has just provided a Lane Keeping Aid warning, while a flashing red line notifies the driver of a Lane Keeping Alert warning.
Gray lines indicate the system is suppressed because the vehicle is traveling at less than the 40-mph activation speed, the road is poorly marked, or adverse environmental conditions do not allow the camera to determine road markings.