| Common questions about our system: |
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| Q: |
From what distance can the motion detector pick up path activity? |
| A: |
The motion detector can be set up to detect path users at up to 100 feet from the intersection. |
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| Q: |
How accurate is the motion detector? |
| A: |
In our testing and in the field, we have a 100% success rate in detecting path users. A large animal will cause the detector to trigger, but in our opinion having the lights flash in this circumstance is a good thing. Moving branches in the detector's field of view can cause false positives. We recommend either pruning brush in the detector's field of view or taking care to aim the detector carefully. |
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| Q: |
Why not use a push button instead? |
| A: |
A push button can be used in place of motion detection, or in combination with the infrared detector. Our research has shown that some path users will not bother to activate a push button when available. A push button works well in conjunction with the infrared detector when a sidewalk intersects a path at a mid-block crossing. |
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| Q: |
Does the Cross Alert sign alter traffic flow? |
| A: |
Absolutely not. Our intersection systems reinforce existing Right of Way rules for bike paths, which typically require the path user to yield the Right of Way to vehicles at intersections. This sign is a warning system that raises the awareness of vehicular traffic to the presence of path users at or near the intersection. |
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| Q: |
How long do intersection signs flash once triggered? |
| A: |
The duration that a Cross Alert sign flashes is completely configurable, depending on the needs of the intersection. |
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| Q: |
Will heavy rain cause false readings from the motion sensor? |
| A: |
No. We use infrared technology, which should only trigger on bodies in motion. |
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| Q: |
What maintenance is required for these systems? |
| A: |
None. We have systems in the field that have had no maintenance performed to date. |
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| Q: |
How effective is the solar application? |
| A: |
For our solar system to work, we need on average 1 to 2 hours of sun a day. If an intersection is in dense shade, we offer a system that can be wired into the electric grid. |
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| Q: |
What happens if the sun doesn't shine? |
| A: |
Under normal use, we can run for over a week without any re-charge being applied to the battery. |
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