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App Store Apps > Travel > Mass511
Mass511 icon

Mass511

by Castle Rock Associates, Inc. · Travel · Free
On the App Store since August 2022 · Data updated 2026-10-27

Mass511 is made and published by Castle Rock Associates, Inc. AppBrain is an independent app data site and isn't affiliated with Castle Rock Associates, Inc. The app name, icon, screenshots and description belong to Castle Rock Associates, Inc. and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
3.42
60 ratings
Last updated
April 20, 2026

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

Rankings

App Store top charts

App Store Rankings for Mass511

This app is not ranked

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Also available on Google Play

Mass511 icon Mass511
Castle Rock ITS
3.5
Free
10,000+

Releases

Updates seen on the App Store
Version
2.8
Launched
August 2022

No changelog data

User feedback

Ratings and reviews on the App Store

Comments on Mass511 for iOS

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Technology

Found in the app by AppBrain
Price
Free
App size
40.0 MB
Content rating
Everyone

Technologies used by Mass511

About the app and developer

About Mass511

Mass511 is a travel app developed by Castle Rock Associates, Inc.

User Ratings

Mass511 is rated 3.42 out of 5 stars. The rating is based on 60 ratings.

App Information

Mass511 is freely available from the App Store. The app size is 40.00 MB. The latest version available is 2.8. The last update was on April 20, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since August 2022.

Developer information for Castle Rock Associates, Inc.

Castle Rock Associates, Inc.

Address:

Share Mass511

Store listing

By Castle Rock Associates, Inc., from the App Store
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Screenshots by Castle Rock Associates, Inc., from the the App Store listing
Description by Castle Rock Associates, Inc. Written by the developer, not by AppBrain. Click to read.
The Mass511 app is the Massachusetts Department of Transportation's official traffic and traveler information app. The Mass511 app, new and improved in 2022, provides up-to-date traffic information for interstates, U.S. routes and state highways across Massachusetts.

FEATURES:
• Hands-free, eyes-free audio notifications of traffic events while you drive
• A zoom-enabled map with tappable traffic event icons and surrounding camera views
• Near real-time updates on traffic incidents, construction, weather and road closures
• Manage My Mass511 personalized accounts including saved routes, areas, and camera views and email and text alerts
• View current traffic speeds
• View traffic cameras throughout the state. Sign up for a My Mass511 account to save cameras for easy access.
• Access to additional traveler information resources

NOTE: Continued use of GPS running in the background can decrease device battery life.

The primary responsibility of every driver is the safe operation of their vehicle. While traveling, mobile communication devices should be used only when the motor vehicle is at a complete stop, off the traveled portion of the roadway. Do not text and drive (it's against the law) or use this app while driving.

App developed by Castle Rock Associates https://www.castlerockits.com. For help with Mass511, please visit https://mass511.com/help/index.html.
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