The document outlines 5 modules needed for a bus transportation app: 1. Search for the nearest bus stop to a user's current location. 2. Display buses available at a given bus stop. 3. Show buses that travel between two locations, such as stops or landmarks. 4. Provide estimated arrival times that dynamically update for traffic or mechanical delays. 5. Display ticket fares between two stops entered by the user.

1. Following are the modules we need in our project:
1. Search for nearest bus stop.
To search the nearest bus stop to current position of the user.
2. Buses available on that bus stop.
To show the buses available on a particular bus stop.
For eg. – If user types bus stop name as XYZ, then the app must show that bus no. 2, 56,
88, etc. are available on the bus stop XYZ.
3. Buses that travels from place A to place B.
To show buses (bus no.) available from place to place.
For eg. – If user wants to travel from bus stop ABC to bus stop XYZ, then the app must
show that bus no. 399, 533, 444, etc. travels from place ABC to place XYZ.
4. Time Interval.
To show in how much time a particular bus will reach at a particular bus stop.
Conditions:
a. If the bus gets stuck in the traffic.
If the bus gets stuck in traffic, then the time interval should be
increased.
For eg. – If a bus takes 5 minutes to travel from stop A to stop B, but it
gets stuck in the traffic, then the time should increase minute by minute
i.e. 6 minutes then 7 minutes.
b. If the bus stops due to some mechanical reasons
If bus A of bus no. 999 stops working then the driver (of bus A) will press
a button which will indicate the next coming bus B (same bus no.) that
bus A has stop working.
While these procedure goes on the estimated time of A will be
transferred to bus B.
For eg. – If estimated time of bus A at a particular bus stop is 5 minutes.
But the bus A stops working then a signal will be passed on to bus B &
the estimated time will be shown of bus B to the user i.e. instead of
showing 5 minutes it will show 10 minutes. (Time required for bus B to
reach that particular bus stop)
5. Ticket fare.
To show the ticket fare of particular bus form stop A to stop B.
For eg. – The user enters the bus stop names (from & to), then the app will show the
fare of that particular travel.