"The new information icon indicates the prohibition of taking a seating position that bothers other people", the agency said in a statement.
Madrid is the latest city to ban manspreading but you may be asking yourself what exactly is manspreading? We can't force woman to stop breast feeding on busses or trains and we can't force men or women to stop bringing strollers on, why should we force men to close their legs?
The city has officially banned the act on trains and buses (much to the delight of the extra people who can now sit comfortably while trying to get from A to B). "I have seen women with handbags on other seats, lying back and spreading their legs like men", Jesus Herraiz from Madrid said on Twitter.
Madrid's Municipal Transportation Company (EMT) announced that it would install anti-manspreading signs in all new carriages and vehicles in order to discourage the invasion of personal space.
'Manspreading is the practice of certain men sitting with their legs wide open on public transport, taking up other people's space, ' reads their manifesto.
Earlier this year, one group, Mujeres en Lucha, started a campaign #MadridSinManspreading (#MadridWithoutManspreading).
New York City has already adopted a similar policy.
NY was the first prominent city to campaign against manspreading on public transport in 2014, though the issue was reinvigorated in Spain this year when the left-wing CUP party demanded an end to what it called an "exhibition of machismo and a micro-aggression".
Would-be manspreaders will hopefully be deterred by small pictures of a thoughtless, faceless red man invading the seat to his right. According to the Spanish news agency The Local, the most obnoxious practice ever has been prohibited across all the city's public transit services.
Do you think that manspreading is a serious enough problem that it requires government intervention, whether in Madrid, in the USA, or elsewhere around the world?