signals, stoplight, semaphore
LicenseIcons are availabe unter the Creative Commons Attribution-Share Alike 3.0 Unported license (CC BY SA 3.0) which lets you remix, tweak, and build upon our work even for commercial reasons, as long as you credit the project and license your new creations under the identical terms.
Please credit as follows: Maps Icons Collection https://mapicons.mapsmarker.com
Please download and host the icons on your own server, Dropbox or Google Drive.
To download the icons, right-click on them and save as.
Credits : Nicolas Mollet