Travel fare zones within London would be abolished under radical plans by the Green Party .
London mayoral candidate Sian Berry wants a flat fare structure in place to make commuting more affordable for those living in the suburbs.
She is also proposing a daily cap for part-time workers, to bring their travel costs in line with those of monthly season ticket holders, and one-hour timed tickets so people are not penalised for changing modes of transport.
"The Green Party is levelling the playing field to make everyone's journey to work cost the same, removing the hidden penalties if you live in outer London, work part time, need to take two buses, or change between tube, bus and train on your way," she said.
Under her proposals, the fare zones would be phased out until there is a single zone by 2025. Zones four, five and six would be combined immediately to form a single zone.
Ms Berry was joined on the launch of her 'Fairer Fares' transport policy by former Hounslow Council leader Dave Wetzel, the man responsible for introducing the travel card in 1983 when he was transport chairman on the Greater London Council (GLC).
"The Fairer Fares campaign makes sense. When we designed the Travelcard the city had a very different set of needs, the cost of housing was lower, and jobs were near and long-lasting," he said.
"Londoners' travelling patterns have changed much over the years and costs have spiralled for those who live further from their jobs."
Liberal Democrat mayoral candidate Caroline Pidgeon recently announced plans to provide half-price fares for morning commuters - by scrapping funding for the proposed Garden Bridge.
Train fares rose by an average of 1.1% across Britain from Monday, January 4, which was reportedly the smallest increase since 2010.