Car signalling

Having now returned from a holiday, something struck me. My husband did all the driving while I was a passenger. He's a great driver, and when there are no cars around, he doesn't use his indicators. And of course he doesn't have to, as there's nobody there who needs to see it!

But I'm not like that. It doesn't even occur to me not to indicate when I'm driving. I always do, no matter what. I suppose that makes me rigid in my thinking - would I be different if it's hadn't had a TBI, who knows...