Alongside the new fare estimate requirement, today's proposed new taxi reforms will also push for more transparent fares and increased safety regulations.
Another urges TfL to publish in advance of the next mayoral election "a set of highly transparent, basic fare income data and assumptions on which candidates can base manifesto commitments and inform the public's understanding of any proposed changes".
A European Parliament report on transparent air fares said air passengers have as much right as any other consumers to clear and comprehensive information about the price they actually have to pay - including online.
In a further move that could improve the position for air passengers, the chancellor said the government will push to amend pricing regulations to make tax charges on air fares transparent.
The promise to make the setting of fares transparent addresses concerns of the assembly over the opacity of TfL decisions which, since its formation, have been made in the same way that Schroedinger decided the fate of his cat.
"We have always had concerns that quotas and availability of advance fares are not transparent.
And unlike the cash-in-hand past of this industry, we only take card payments so every fare is traceable and transparent".
Bjorn Amelan's set, which includes transparent fabric that wraps around the stage, fares slightly better.
Under the new bill, dubbed the Transparent Airfares Act, airlines can advertise the base fare, with extra fees and taxes listed separately on the same print ad or with a link or pop-up window on websites.
"This upfront, transparent and fair pricing model means that we can continue to provide a fare with no hidden charges, and will increase the likelihood of our customers being able to get a cab," she added.
"At a time when independent, transparent comparison shopping is most needed, some airlines are attempting to restrict access to their fare and schedule information," said the report by Fiona Scott Morton, an economics professor at the Yale School of Management.
