Great! We really appreciate your help! It would be very helpful if you could use our tool to audit accessibility of neighborhoods. By accessibility audit, we mean:
Please watch the following video to see the demo of how the accessibility audit works:
Yes! Please follow the following steps:
Google Street View provides a rich visual data source to inspect a city without leaving your home. However, the images shown are collected periodically every few years. Hence, they might be out of date. Indeed, some users have reported that problems shown in our interface have recently been resolved. Generally, however, street-level infrastructure does not change very often. We have conducted two studies of our own that compare audit data from our online interfaces to audit data collected via traditional, in-person walk-around audits [1,2]. In both cases, we found high agreement--in other words, the images in Google Street View are a good representation of the state of the physical world. This is consistent with findings from previous studies [3, 4, 5].
Moreover, with the advancement of GSV technology, imagery is likely to become even more accurate than it is already.
Sometimes during auditing, you would have noticed that the navigation arrows go missing, especially, while walking straight.
Worry not, there is a simple solution!
Just double click on the street to move ahead and you are all set!
From time to time, you'd observe Street View images taken at the same location at different time, and the environment in the images may be conflicting--just like the pair of the Street View images shown above. In the older image on the left, there is no curb ramp at the end of the crosswalk, but the problem is fixed in the newer image on the right. If you find a similar case, please label the accessibility features in both images so we can keep track of how the environment has changed over time!
Yes, you're right, labels do disappear after you take a step in the Google Street View interface but don't worry, we store all of your labels.
So, why does it work like this? Well, the answer is kind of complicated but the short answer is: the Google Street View interface is akin to a 3-dimensional interface similar to walking in the real world. When you place a label, we convert the 3D position of the label to a 2D lat/long position. However, once you take a step to a new location, we cannot accurately recompute the label's position in 3D for that new view. See, we told you it was kind of complicated. :) Rest assured, you can always see your applied labels in the top-down map in the bottom-right hand corner of your screen.
Yes. Here is the list of keyboard shortcuts:
|Key||What it does|
|Mode Switch||E||Switch to the Exploration mode|
|C||Switch to the Curb Ramp mode|
|M||Switch to the Missing Curb Ramp mode|
|O||Switch to the Obstacle in Path mode|
|S||Switch to the Surface Problem mode|
|B||Switch to the "Can't see the sidewalk" mode|
|N||Switch to the "No Sidewalk" mode|
|Label Rating||1 2 3 4 5||Set corresponding rating|
|Enter||Close label rating|
|Interface Control||Z||Zoom in|
|Shift + Z||Zoom out|
|Left||Rotate point of view left|
|Right||Rotate point of view right|
Sometimes the Street View window images could not be correctly loaded and you see nothing but a grey window even if you move around. This could happen for various reasons, e.g., you could be in a location where Google Street View images are not available. To fix this, you can reload your page. Note that all of your previous labels will be saved and you can continue your current mission after reloading.
Yes, here are some examples: