If by mobility, car-centric transport is included, and if you seek a context that applies mainly to developing Asian countries:have a look at this visual guide/report.The thing I like about it is that the visual/pictorials actually give the issues a sense archetypical urgency rather than the usual scholastic pedandry.May even spark new thinking in mobilities other than the car-centric one.
Please take a look at this report written by Lopez-Ruiz et al. (2013). Quantifying the Effects of Sustainable Urban Mobility Plans. URL: http://ftp.jrc.es/EURdoc/JRC84116.pdf
You may also want to check the mobility plan of the following city: Vancouver, Chicago, Seattle, and Portland.
I think an interesting perspective is linked to the consumption of resources and the emission of CO2 related to the way public transport and oil vulnerability affect urban areas (e.g. https://www.griffith.edu.au/__data/assets/pdf_file/0003/88851/urp-rp17-dodson-sipe-2008.pdf ).
This can be an interesting and not commonly explored dimension when talking of 'sustainability' of mobility plans.
This is just an idea, I hope you can find it of any use.
All the best for your professional and academic career.
I think in Brazil mobility plans should focus in a social dimension of sustainability. We live in citys with very bad conditions for low income people that lives very far for the city centers and have to move for working and find services.
So, I'm searching for an approach more social than ambiental. I think that accessibility is the key to garantee a better quality of life.