I've not seen the current application form, it may or may not be the same as I filled out a few years ago. When I applied there was a word limit for answers and it stated what it was on the question if there was one, on several of them I was on this limit or a few words under. I typed my answers out on Word to get the word count and then it was just a case of copy & paste from Word to application. It meant I had the answers in the Word document if any other positions came up.
I only used 1 example and I structured my answers in the STAR format (Situation, Task, Action, Result)
Plenty of ex-emergency services are now drivers so you will no doubt have the experiences for answers, it's just a case of structuring them correctly no doubt.
Good luck!