You are downloading the Traffic Viewer XAP file v1.0.0.0 for Windows Phone. Traffic Viewer is a free Travel App: Install this app to show speeding cars on a map. You can choose which speeds are shown on the map. In a future release you'll be able to set the refresh rate. You can now download the offline XAP package file to install & try it.
Download Locations for Traffic Viewer 1.0.0.0 XAP file
Package File
Please Click Here > to retrieve available package files for Traffic Viewer.
Please be aware that the Traffic Viewer XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Traffic Viewer or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Traffic Viewer XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.