Traffic calming

Google collects certain info to quickly pair your Bluetooth devices with devices that use your Google Account. Some of this functionality uses Google Play services. For example, Fast Pair collects:

Speed bump

Learn how to use your Android device and get the most out of Google. Get step-by-step guides and instructional videos on how to set up your phone, customize your settings, and use apps.

The data that Fast Pair collects is encrypted in transit. To find and delete Fast Pair accessories and tags that are saved to your account:

If you don't want to receive Fast Pair notifications for pairing, you can opt out of Fast Pair scanning in the settings.

If your device doesn't automatically categorize your Bluetooth device, you can manually select your Bluetooth device type:

Rumble Strips: A Sound Investment (FHWA-SA-07-024) is an informational DVD on shoulder and center line rumble strips and rumble stripes that provides a general introduction for decision makers and practitioners. For a DVD of this resource, please send a request to report.center@dot.gov and include the publication number and title, along with the number of copies and your mailing address and phone number. Requests will be filled based on availability.

For Fast Pair devices and car kits that support Android Auto Projection, the Android device uses automatic categorization.

Rumblestrips

Rumble strips are an effective countermeasure for reducing roadway departure crashes. The noise and vibration produced by rumble strips alert drivers when they leave the traveled way. Rumble stripes is the term used for rumble strips painted with a retroreflective coating to increase the visibility of the pavement edge at night and during inclement weather conditions.

Additional information is available via the Crash Modification Factors (CMF) Clearinghouse. The Crash Modification Factors (CMF) Clearinghouse is an online repository of CMFs, along with supporting documentation, to help transportation engineers identify the most appropriate countermeasure for their safety needs.

Research has shown that installing rumble strips can reduce severe crashes. The following tables illustrate the safety effectiveness of center line and shoulder rumble strips. This information, along with additional statistics, is contained in NCHRP 641: Guidance for the Design and Application of Shoulder and Center Line Rumble Strips. 2009.

U.S. Department of Transportation Federal Highway Administration 1200 New Jersey Avenue, SEWashington, DC 20590 202-366-4000

You can use Bluetooth to connect some devices to your phone without a cord. After you pair a Bluetooth device for the first time, your devices can connect automatically. If your phone is connected to something through Bluetooth, at the top of the screen, you'll find a Bluetooth icon . Learn how to connect a Bluetooth device.