Dear Bharati,
You can track your vehicles location, static or mobile, log sheet by using GPS base tracking devices. The National Meter Asset Management & Tracking Solutions is one of the solution provider.[www.nationalmeter.in]
There are several APPS which can be created exclusively for your organisation.
Secondly, there is something called TimeSheet. This can also be modified and used in smartphones.
Google and find out.
Best wishe
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