Most people have experienced this dire situation. You're out in the car enjoying the great open road and suddenly you just have to go... for a number one or a number two... but where?
Now, relief is in sight and there's no need to get stuck without a loo while you are travelling or out and about.
No matter where you are across Australia, the National Public Toilet Map on line or on a mobile app can help you to find public toilets.
"The fear of leakage or not having access to toilets in public can restrict, and even stop, people from leaving their home for everyday activities," Rowan Cockerell, chief executive of the Continence Foundation of Australia, says.
With information on over 19,000 toilets, users can search for a public toilet based on location, or map out the toilets along a journey with the trip planner.
The Continence Foundation of Australia says public toilet access is vital for those with bladder and bowel urgency.
"Many people will be familiar with that sudden and strong feeling of needing to go to the toilet, and sometimes not quite making it. This urge incontinence may be linked to Parkinson's, multiple sclerosis or other health conditions," Mrs Cockerell says.
"Incontinence is also a common experience during pregnancy and after childbirth.
"Research tells us that one in four adult Australians experience bladder or bowel incontinence, or both."
View the National Public Toilet Map online: toiletmap.gov.au or download on Google Play or the App store.
Toilets can be filtered based on search requirements, including accessibility, opening hours and facilities such as baby change.
The Toilet Map is an essential download for any road trip or holiday - big or small.
Read more: What does your loo say about you?
Read more: Five healthy habits for bladder and bowel