Google Maps will have alerts for all rail crossings in the U.S. Photo: Flickr/Mike Brown (CC)

Google has teamed up with the Federal Railroad Administration to bring rail crossing warnings to Google Maps. Every crossing in the U.S. will be added, and drivers will receive alerts while using turn-by-turn directions in the Maps app.

image courtesy of Parrot

In keeping with their promise to make more apps available for their Android-based line of Asteroid car audio head units, Parrot has added four new apps to the Asteroid’s library: Three navigation apps — including a TomTom app — and a Facebook app.

TomTom has updates its popular Navigator app with support for a slew of newer Android handsets, including the Samsung Galaxy S III and Google Nexus 4. Sadly, version 1.0 of TomTom’s app has only been compatible with 480 pixel-wide displays, which isn’t good for devices like the GS III. Now that version 1.1 is out, the app fully supports more than 200 Android devices on the market with resolutions ranging from 800 x 480 to 1280 x 800.

Another big addition is the ability to store offline maps onto your handset’s microSD card to conserve storage on the device itself. You can even download maps in the background while you’re not using the app.