I would like to know aboutthis area regards research about accessibility and mobility of transportation for people with disability by their daily, weakly, monthly and anualy activity for different trip purpose by different modes, which factor make most of influence of their behaviour in trip demands and is it possible to measure the costs of their trips and do they have influence on making their trips in realtions to subsidies and discounts. Also I want to know more about whether it is possible to measure sustainable transportation for people with disability.