# EnLighten Study

> Real-time traffic light prediction and alerts for drivers in study cities. (iPhone/iPad app by Connected Signals, Inc..)

- Source: https://appshunter.io/ios/app/enlighten-study/id1139268219 (this page in markdown: same URL + `.md`)
- Developer: [Connected Signals, Inc.](https://appshunter.io/developer/894855037)
- Category: Navigation, Travel
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 70 MB
- Languages: American English
- Released: 2018-02-15
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/enlighten-study/id1139268219/reviews.md

## What is EnLighten Study?

This version of EnLighten is part of a six-month study on the safety, efficiency, and environmental benefits of providing drivers with real-time information about traffic lights in their area. Coverage is only available in four study cities:

Phoenix, AZ
San José, CA
Las Vegas, NV
Portland, OR

We establish a baseline of driving behavior before we begin to provide traffic light information to a driver. You must drive through 75 connected lights with the app open and in the foreground before you will see traffic light information.

Using real-time signal information and position information from GPS and cell signals, EnLighten notices when drivers stop at a red light. It then uses Connected Signals' proprietary technology to predict when that light will change. If it can predict, it tells them. Then, just before the light turns green, a chime warns the driver to get ready.

EnLighten currently works in selected cities, a list of which can be seen at:
      http://connectedsignals.com/live_cities/
More cities are being added as quickly as possible.

Knowing how much time is available can keep drivers from starting distracting tasks shortly before a light changes and they need to drive.  The chime that sounds shortly before the light changes also helps avoid situations where a car darts into an intersection after being honked at by another driver.

Please be aware that continued use of GPS running in the background can dramatically decrease battery life. EnLighten minimizes use of GPS when you are not actively driving, or when you are not in a covered area.

Send us questions and comments at:
      http://connectedsignals.com/contacting-us/

## Key features

- Real-time traffic light information
- Predicts light changes
- Chime alert before green light
- Reduces driver distraction
- Improves intersection safety
- Requires initial driving baseline

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/enlighten-study/id1139268219/reviews.md

### 1/5 — Doesn’t Work

*2020-12-26*

This app doesn’t work. In order to use the app you must first sign up/register on the website but the website doesn’t exist!  I’m guessing this app was very short lived as it appears to be dis-continued.

### 1/5 — Have attempted several times to sign up

*2019-03-31*

I have sent several messages to this company to be part of the test group for San Jose and don’t even get a message back saying anything.  If it is closed to other testers why don’t they answer. 

Starting to wonder if these guys as doing anytime in this area at all. It was supposed to be a 6 month study.

## Frequently asked questions about EnLighten Study

### What cities does EnLighten Study cover?

EnLighten Study currently provides coverage in four specific study cities: Phoenix, AZ; San José, CA; Las Vegas, NV; and Portland, OR. More cities are being added as the study progresses.

### How do I start seeing traffic light information in EnLighten Study?

To begin receiving traffic light information, you must drive through 75 connected lights with the EnLighten Study app open and in the foreground. This establishes a baseline of your driving behavior.

### Does EnLighten Study have ads?

No, EnLighten Study does not contain advertisements. It is a free application designed for a research study.

### What devices does EnLighten Study support?

EnLighten Study is available for iPhone and iPod devices. It is designed for mobile use while driving.

### How does EnLighten Study predict traffic light changes?

The app uses real-time signal information, GPS, and cell signals to notice when drivers stop at a red light. It then employs Connected Signals' proprietary technology to predict when that light will change.

### What is the age rating for EnLighten Study?

EnLighten Study has an age rating of 4+. This indicates it is suitable for a wide range of users.

### How often is EnLighten Study updated?

The latest version of EnLighten Study is 2.0.3, which was last updated on April 26, 2018. Future updates will depend on the ongoing study.

### Can EnLighten Study drain my battery?

Continued use of GPS running in the background can decrease battery life. EnLighten Study minimizes GPS usage when you are not actively driving or when outside of a covered area.

## Version history (last 4 releases)

### 2.0.3 — 2018-04-26

This app has been updated by Apple to display the Apple Watch app icon.

We have fixed a number of bugs reported by study participants.

### 2.0.2 — 2018-03-07

This version includes small bug fixes and text updates.

### 2.0.1 — 2018-02-16

This update provides clarification about the baseline phase of the study. We establish a baseline of driving behavior before we begin to provide traffic light information to a driver. You must drive through 75 connected lights with the app open and in the foreground before you will see traffic light information.

### 2.0.0 — 2018-02-15

No release notes.

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## Related topics

[enlighten study](https://appshunter.io/ios/topics/enlighten-study) · [enlighten](https://appshunter.io/ios/topics/enlighten)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*