Lonely Planet İstanbul Guide

Etiquette A Have your İstanbulkart or jeton ready before you go through the ticket turnstile – locals are well practised at moving through ticket barriers without breaking pace. A If you want to stay stationary on an escalator, stand on the right-hand-side; you’ll need to walk if you are on the left. A Turks are usually very polite and will give their seats to older passengers, disabled people, pregnant women or parents carrying babies or toddlers if there are no spare seats available. You should do the same. A Queuing to board public transport is honoured in principle rather than in reality. Be proactive but not pushy.

For much more, see Getting Around