Enlighten User Guide (Android)

The app is designed to be as safe and non-distracting as possible. For example, countdowns telling you when a light will turn green stop approximately 5 seconds before the light changes, to ensure that you look at the light and the road (not the app) to decide when to start driving. Speed recommendations are constrained by the speed limit. Since some intersections cannot be predicted, the lack of a speed recommendation doesn’t mean, “go fast.”  It means no reliable indication is available. To repeat: red means slow down, no indication means no information.  Just drive as you normally would.

  • If you see EnLighten behaving in a way that seems wrong to you, or if you have suggestions, please use our comment form.

EnLighten’s various screens and options are described below.

Launch and Background Screens

Launch and Background Screens

When you launch EnLighten, one of the main screens at the left appears. If you are in a connected municipality, the appropriate city seal may be shown. If a crossed-out satellite dish appears, it indicates that EnLighten cannot get the server access it needs to function.

The about button produces the About EnLighten screen, shown below, with the option to read the End User License Agreement (EULA).

The settings button, produces a menu offering Settings and a shutdown button options.

EnLighten displays any countdowns that occur on the main screen. When EnLighten is in the background, you can select the EnLighten App icon from the Apps screens or select the notification itself to bring EnLighten to the foreground. Depending on your media volume settings, countdowns for the straight traversals will be announced over your phone’s speaker even when the application is running in the background.

Settings and About Screens

Settings and About Screens

When you select Settings the Settings screen appears.

Bicycle mode is very similar to standard EnLighten but only shows the straight arrow and a smaller range of speeds.

The Conserve battery when below 30% will limit the location frequency while power supply is low.

If Start on boot will load the app when your phone is powered on. This option is off by default.

The Start when driving detected option will start the application when driving behavior is detected. The application will sit idle otherwise. The app will need to be running in the background in order for this functionality to work.

The Use speedometer out of coverage option updates the EnLighten speedometer with your calculated speed even when you are not driving in a covered area.

The Shutdown button will turn off the application.

Use the back button to return to the EnLighten screen.

Countdowns

Countdowns

When EnLighten is able to predict a light’s behavior, it can tell the driver by displaying a countdown, depending on the predicted behavior. If it can predict precisely, it provides an exact countdown, as shown to the left, which indicates when the light will change from red to green. If it can predict only a minimum time till the change, a number with a plus sign, or “Countdown+” will appear, as seen on the right, indicating that the light will remain red at least that many seconds.

About five seconds before the light changes, for an exact prediction, or when the light will change in five or more seconds, for countdown+, the display changes to a white arrow or red arrow, respectively, as seen below, to warn you to get ready to drive.

At an intersection with a separate left-turn signal, EnLighten may show a separate countdown (or countdown+) for through and turning traffic, as shown on the left and right.

Green Light Optimal Speed Advisory (The Arcs)

Green Light Optimal Speed Advisory (The Arcs)

While driving, if you are approaching a signal to which there is adequate prediction information to recommend speed, the EnLighten application will make that optimal speed available to you in the form of a range of speeds highlighted in green. If there are speeds at which you will arrive at the light on red, the application will display those speeds as well.

Many times, if you maintain a speed, you will not only arrive at the light immediately ahead of you on green, but subsequent lights as well. When the green arrival speed for a light following the upcoming light is available, a second arc will appear just to the outside of the closest light’s optimal speed arc, as shown on the right.

Out of Coverage

Out of Coverage

When you are out of EnLighten’s coverage area, the status bar will display “Out of Coverage Area.” A popup will also appear that will allow you to anonymously request that we add coverage for your current area.

Off-System Signals

Off-System Signals

Some traffic lights are not connected to the municipal traffic net for one reason or another (this may be a temporary or permanent situation). When you approach such a light, EnLighten displays “Off-System Light” on the screen to indicate that no countdowns or chimes will occur at that light.

Pausing and Resuming EnLighten

Pausing and Resuming EnLighten

If you select the Shut Down menu item, EnLighten will stop. You must manually relaunch EnLighten to continue using it.

If you press the Driving/Idle button, EnLighten will switch between Driving mode and Idle mode. In Idle mode, the location monitor will shut down and no light information will be provided. The app will automatically switch from Driving mode to Idle mode if it detects that the user is no longer driving.The app will automatically switch back to Driving mode if the “Start when driving detected” setting is enabled.