Martin M. Merton PhD is a fictional character that was created by Connex Melbourne

Connex Melbourne

Connex Melbourne was a wholly owned subsidiary of French company Veolia Environnement, which had a franchise from the State Government of Victoria to operate all suburban passenger rail services in Melbourne, Victoria, Australia. In August 2007, Connex's contract was extended to 30 November 2009....

 in 2007 to increase the politeness and consideration of other passengers on Melbourne's Public Transport System

The campaign has been criticised by some commuters, with many mX

MX (newspaper)

mX is an Australian free afternoon daily newspaper in the cities of Melbourne, Sydney and Brisbane, owned and produced by News Limited. Targeted at commuters, its main channels of distribution are inner-city railway stations, tram and bus stops, and major CBD intersections.-Beginnings:The first mX...

 newspaper letter writers commenting that the money spent on this campaign could be better spent elsewhere.

A book "There's no 'I' in Carriage" and a website were created (the website is not active as of 2010); the title of the book being a parody of the saying

Saying

A saying is something that is said, notable in one respect or another, to be "a pithy expression of wisdom or truth."There are a number of specific types of saying:...

 "There's no 'I' in team". Both are intended to be humorous and are designed to imply lessons of passenger consideration rather than state them directly.

The character of Martin Merton was portrayed by Jim Knobeloch

Jim Knobeloch

James Joseph "Jim" Knobeloch is an American actor best known for his role as Jake Slicker on Dr. Quinn, Medicine Woman....

.