JSFiddle - React, Tailwind, and code Playground

HTML

<img id="myLight"></img>

CSS

#myLight {
background-image:url(blank.png);
width:230px;
height:220px;
}

JavaScript

var myTraffic = document.getElementById('myLight');
var myPics = ['http://media.hsl.washington.edu/media/schnall/nurs499c/url.gif','http://seofreelancermumbai.in/wp-content/uploads/2016/01/SEO-URL-1.jpg','https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/URI_Euler_Diagram_no_lone_URIs.svg/2000px-URI_Euler_Diagram_no_lone_URIs.svg.png'];
var totalPics = myPics.length;
var i = 0;
function loop() {
if(i > (totalPics - 1)){
    i = 0;
}
myLight.src = myPics[i];
i++;
loopTimer = setTimeout(loop,3000);
}
loop();