Dave O

I have a 1.4 Corsa on a 63 plate. On my dashboard there is no engine temp gauge I am worried that I can't keep a check on the engine temp whist sat in summer traffic jams driving to the sea side. There is a fan that I hear cut in on certain occasions. Is this a true electic fan or a free wheeling fan fan that " bites" when bonnet temp gets hot ... Thanks for any help regards Dave o