1.When the product will begin to work?
In order not to disturb driver’s normal driving, meanwhile considering the commercial vehicle’s handling, we suggest to set the FCW and LDW functions’ start up driving speed 30KM/H.
2. Is it any difference between FCW alarming and LDW alarming’s sound?
LDW alarming sound is “di di di di”, FCW alarming sound is “danger” and “di di di di”.
3.What is the distance of the front anti-collision alarming, why is the time different for every alarming?
Front anti-collision has two different alarming mode, safety distance alarming and anti-collision alarming. The alarming time is not a solid value, it is calculated according to the driving speed and two vehicle’s relative velocity. For example, if the driving speed is 50km/h, safety distance alarming is about 18 meters, the brake time is 1.3s; if two vehicle continue to close to, has the rear-end danger, the system enter into the anti-collision warning mode, in this condition, the reaction time for the driver is about 2.7s. Faster driving speed, more far alarming distance, earlier alarming time. More faster of two vehicle’s closing speed, more far alarming distance, earlier alarming time.
4.What is the distance of LDW alarming?
LDW alarming is on the base of front wheel, but according to the international standard and take into account of driver’s comfortable, the actual alarming time is advised to set above groove 10-20cm. But it will be a little difference according to the vehicle height and product installation error.
5.Why it will be different between the right departure alarming time and left departure alarming time?
It will be a slightly different between the right departure alarming and left departure alarming because of the bumpiness of the road surface, vehicle height and the rotation error during the product installation. But the latest alarming time of left side is not exceeding the double yellow line of left sides 20cm. Meeting the international standard, can get the expectant result.
6.If there is FCW alarming and LDW alarming, how does the system handle it?
Because the dangerousness of FCW alarming is higher than the LDW alarming dangerousness, if two alarming coincide, only will send the FCW alarming.
7. How can the driver control or avoid alarm?
If the driver make turn signal when changing lanes, or brake when closing with front vehicle, it can control the system alarm. System will restart alarm function after 3seconds when finishing brake or turn signal end.
8. How can I do if the front side alert keep alarming when I actively speed up to overtake front vehicle?
The driver should turn on left signal before overtaking. At this moment the safety distance reminding still works, but the lane departure collision alert will be controlled automatically to avoid driver’s auditory fatigue.
9. How does the collision alarm give out if there’s a vehicle overtaken?
When there’s a vehicle overtaking from close distance, the safety distance alarm will give out at first. If the vehicle is too close, it will trigger collision alarm; if the front vehicle drives away acceleratory, alert will be relieved.
10. Why is the collision alert not so sensitive?
In order to make sure of driver’s alertness, the collision alert’s threshold setting is conservative, it only works in real collision dangerous occurred. The driver should judge the actual condition rapidly, tap the brakes to avoid collision.
11. Does front alert include auto brake function?
Commercial vehicle’s braking system is pneumatic circuit; most of them don’t have ABS adjustment. In order to avoid more risk caused by braking lost, the device doesn’t have auto brake function.
12. Can the system’s image connect with video DVR?
The product reserves one NTSC video output, which can change to standard female short interface through patch cord to provide recording of video DVR.
13. How do drivers use our system to form safety driving habit?
The drivers should drive in self land, and turn signal to change land; control distance, avoid closer distance, then system’s alert will be reduced rapidly. As time passes, drivers can form a good safety driving habit.
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Hao Nai Industrial Co., Ltd
Care for driving, care for life