whilst pushing, or being trundled in, the wheelchair around London I didn't want to keep saying "excuse me please" so I decided to use something simple, easy to understand in any language - "beep beep"!
This worked wonderfully and almost everyone smiled and moved. One French lady smiled and said "beep, beep?" to which I replied in my best school french "Internationale oui?" she laughed and said "you are correct". So now we know, "beep beep"is International and I can speak it fluently! Feel free to use it.