Hello,
I have gone through your post related to the taxi application development similar to the Ola. Actually I am willing to do this job because we have already made the similar application I can show you the working demo for this application. Our application is flexible for every location.
In which we have used the Google Map and pusher for the location access. Also has SOS functionality so that if some user is in trouble they can report and admin can get to the exact location.
We have rider app, driver app, vendor app and admin panel with sub admin functionality.
I can show you the demo for the application, but for that I need your location so that I can activate the demo for your area.
Thanks and Regards
Ayushi Mishra
Synarion IT Solutions