The permit is valid for one year - as per the statement on the inside front cover:
"This permit is valid in all of the following Countries, with the exception of Australia, and entitles the holder to drive vehicles included in the category or categories nominated on the last page of the permit, for a period of one year..."
It also says it under the 'Important' note. Unless it's been updated since I got mine.
How can they tell if it is expired - mine from RACV has no issue or expiry date on it
Yep so is ours thats why I wasn't sure. If you look on the inside left and flip it around, the top paragraph says it lasts a year from the issue date (which is on the front).
The same applies inBali!They are definitely required in Thailand. You may never get asked but if you are you better have one or a Thai license. "Tea money" may be required if it is simply a license check but if it is an accident insurance issues could arise.
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Pretty sure they aren't required in the UK, which likely means EU as well - I hired a lot of cars in UK (years ago) and it didn't look like Aussies needed them there, even though I had one (from memory, I volunteered the thing but they weren't interested - they recognize our licence). Was a while ago though.
Thailand you definitely need one for the insurance to be valid, despite the fact it isn't hard to hire one without one. Not sure about motorbikes though, as the usual bikes you see zipping around the place (under a certain size - "Postie bikes" I call them) a license isn't required so long as you are over a certain age (15/16?) BUT it could get awkward should you be involved in an accident. Insurance etc. Especially if someone is injured, and you (as the foreigner) are at fault... and you WILL be at fault if the injured person is a Thai.
Last April (2012), I rented cars in Belgium, Rome, Inverness and London (3 separate hires). Not once did any of the Hertz agents ask for a IDP. In May (2012), I hired a car in Orlando and a RV in San Franciso - again, no request to site an IDP.We indeed needed it for a Hertz hire last year in Italy, as well as in Monaco and Greece.