GRIDSMART Box FAQ

FAQ's regarding the GRIDSMART Box.

What is the GRIDSMART Box and how does it work?
The Box is simply a zone that sends configured outputs from GRIDSMART to the controller inputs when there are objects present and/or moving through. The inte...
Wed, 1 May, 2019 at 4:24 PM
How do I configure the Box?
Draw the Box zone to cover the area of the intersection where you want extensions for greens and/or all reds. Note that pedestrians and/or other vulnerable ...
Wed, 1 May, 2019 at 4:27 PM
Can GRIDSMART distinguish bikes from motor vehicles?
Yes. The GRIDSMART Box discriminates bikes, and often other vulnerable road users (VRUs), from motor vehicles with image-based classification using a deep ne...
Wed, 1 May, 2019 at 4:28 PM
Do bikes in the box also activate any vehicle extension outputs assigned to the box?
Yes. Bikes are considered a subset of vehicles. Only bikes will activate the bike extension outputs, but both bikes and other motor vehicles will activate t...
Wed, 1 May, 2019 at 4:28 PM
What kind of bike reporting is available?
With 19.3, length-based classification reports, still based on the stop-line vehicle zones, can be used to create a length bin specifically for bikes. All o...
Wed, 1 May, 2019 at 4:31 PM
How does GRIDSMART discriminate bicyclists?
GRIDSMART uses an image-based machine learning algorithm, specifically a deep neural network, that has and is continuing to learn how to determine whether a...
Wed, 1 May, 2019 at 5:12 PM
What are the some causes of false positive (FP) bike detections in the box?
We have taken a safety-first approach at bike detection in the box, particularly since short extensions for fast accelerating or moving objects have virtual...
Wed, 1 May, 2019 at 5:00 PM
Does the bike discrimination feature in the Box require two Bell cameras?
Dual cameras are not specifically required but are recommended to achieve the best and safest performance by ensuring good views of all bicyclists in the in...
Wed, 1 May, 2019 at 4:32 PM
Can the Box be drawn to cover the crosswalks?
No. At present this is not supported functionality. Pedestrian zones are included in the Performance+ Module and should be used for this purpose as needed. ...
Wed, 1 May, 2019 at 4:33 PM
Can GRIDSMART discriminate bicyclists at night?
No, not at present. 
Wed, 1 May, 2019 at 4:33 PM