Receive live traffic news via Traffic Message Channel (TMC)
About this app
Receive live traffic news via Traffic Message Channel (TMC)
Qz (pronounced “queues”) connects to an RDS/TMC receiver to receive live traffic messages. TMC is transmitted in the RDS data stream of various radio channels and provides live traffic information, helping you avoid congestions.
For a list of countries in which this app can be used, see https://gitlab.com/mvglasow/qz/wikis/countries.
In order to use this app, you will need a supported RDS/TMC receiver. The following devices are currently supported:
* GNS FM9-BT (requires Bluetooth) * Silicon Labs Si4701/4703-based USB tuners (requires USB OTG support)
If you are unable to pick up any traffic messages, despite having a supported device and being in an area which should be supported, check your antenna. Reception with pigtail antennas (a long piece of wire coming out of the receiver) is generally poor and insufficient for TMC. It is recommended to rely on your vehicle antenna, a building antenna or a somewhat decent room antenna.
Qz will only work with unencrypted TMC services (as encrypted services require paying a per-device royalty). Also, some countries have chosen to require paying a royalty for access to their location tables (which Qz needs to decode TMC locations) and are therefore not supported.
Photo by Joanna Pędzich-Opioła | CC_BY 2.0
Licensed under GPL-3.0-or-later, by Michael von Glasow.
What's New in v2.2.0
Imported from the F-Droid repository index.
- Updates to location tables (AT, BE, CH, FI)
- Show country in list of messages
- Supply country code in TraFF output
- Report correct road classes for BE, ES, LU, NL, SE, SK
- Show tuning info (frequency and TMC service) in main application window
- Substitute CC/LTN/SID where no TMC service name is available
Version history
Jan 14, 2021 · 21.1 MB · Android API 14–24 · code 20200
Imported from the F-Droid repository index.
- Updates to location tables (AT, BE, CH, FI)
- Show country in list of messages
- Supply country code in TraFF output
- Report correct road classes for BE, ES, LU, NL, SE, SK
- Show tuning info (frequency and TMC service) in main application window
- Substitute CC/LTN/SID where no TMC service name is available
SHA-256 4b735eb4b8d6a07357c9778564c7862926bb0162a46d38088156cc7fe3350782
Jan 13, 2019 · 20.9 MB · Android API 14–23 · code 20100
Imported from the F-Droid repository index.
- New location tables (ES)
- Updates to location tables (BE, DE, FR, IT, NO, SE, SK)
- Correct per-country road categories (DK, FI, FR, NO, SI)
- Display start and stop time for messages that specify them
- Prevent messages from expiring if their start/stop time is in the future
- Prevent messages from expiring for at least twice the duration of a full band scan
SHA-256 16158037157ab4e2f5e913b0a552dd21ec2063391ba166a23a8fde502011d2c2
Oct 8, 2018 · 17.5 MB · Android API 14–23 · code 20000
Imported from the F-Droid repository index.
- Send new messages as TraFF feeds to applications supporting it
- Updates to location tables (FI)
- Fix a bug causing the message list UI to miss some updates
SHA-256 f5b06cd25da6ee75dd0909278d4b7661e29531361c76c828c82827b24e92484f
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.vonglasow.michael.qz is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.1.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Qz first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Qz, and a listing is removed when the evidence for it stops holding up.
Get Qz
Every source we list for com.vonglasow.michael.qz is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
4b735eb4b8d6a07357c9778564c7862926bb0162a46d38088156cc7fe3350782
Signing certificate
ef6575fab1e266f05ac211fa552581102ea8c370a9e4cf6006649bffd39a7d6c
Permissions Required
What each permission lets Qz do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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