Please implement WAI-ARIA support in RadSearchBox with and without a Search Context.

It needs the same type of logic added as the AutoComplete and ComboBox control so that JAWS can speak and navigate the list items properly.
It looks like there was a little started because it renders an ARIA live region for status, but never writes to it from what I can tell.

I know this document lists the current controls that support ARIA - http://docs.telerik.com/devtools/aspnet-ajax/controls/wai-aria-support-and-screen-readers

Thanks,
Mike

When the SearchBox is on the right side of the screen and the dropdown width is larger than the SearchBox width, the dropdown goes outside the viewport:
Actual: https://www.screencast.com/t/4SoNcRCj
Expected/fixed: https://www.screencast.com/t/smfPgy767M

Workaround: 

<script>
    function OnClientLoad(sender, args) {
        sender._dropDown.on({ "reflowed": sender._onReflowed }, sender)
    }

    Telerik.Web.UI.RadSearchBox.prototype._onReflowed = function () {
        var that = this;
                       
        var $animationContainer = $(that._dropDown._animationContainer);

        if (that._enableScreenBoundaryDetection) {
            var availableSpace = that._dropDown._getAvailableSpace();
            var tableWidth = $(that._innerWrapElement).outerWidth();
            var dropDownWidth = $animationContainer.outerWidth();
            var overflow = dropDownWidth - (tableWidth + availableSpace.right);

            if (overflow > 0) {
                var left = parseInt($animationContainer.css("left"), 10);
                var newLeft = Math.max(left - overflow, left - (dropDownWidth - tableWidth));

                $animationContainer.css("left", newLeft);
            }
        }
    }
</script>
<telerik:RadSearchBox runat="server" ID="RadSearchBox1"
    DataTextField="ShipName" OnClientLoad="OnClientLoad" DropDownSettings-Width="500px" DataValueField="OrderID">        
</telerik:RadSearchBox>

Validation is not implemented for RadSearchBox.

You can find attached an example that emulates validation of a search box through a dummy textbox and validators attached to that dummy textbox.