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<div>There are some special traffic signals near me<br></div><div><br></div><div>- usually flashing yellow, that has no meaning<br></div><div>- turning red in case of an incoming<br></div><div>special vehicle<br></div><div><br></div><div>Special vehicle may be<br></div><div><br></div><div>(1) emergency vehicle leaving fire department<br></div><div>in this case it gets activated probably once or <br></div><div>twice a day<br></div><div><br></div><div>(2) tram on a level crossing<br></div><div>- in peak about over every four minutes,<br></div><div>during day about once 15 minutes<br></div><div><br></div><div>How to tag this cases?<br></div><div>Like any other traffic light?</div><div><br></div> </body>
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