Mad Devs helped GoDee with developing feature-rich software to re-invent
public mobility by building new smart ways of a daily commute.
GoDee is a reliable way to commute in Ho Chi Minh City, Vietnam. Its shuttle buses take express routes that
link the city’s major districts and popular destinations. GoDee helps riders save time, money and the planet
due to its lower ecological impact.
The app-based system allows users to find a route, select the time, book a seat and pay for the ride online.
Issues and solution
Transportation has become a major issue in Vietnam cities due to the rapid increase (36%) in urbanization.
With its slow, unairconditioned, overcrowded public transport, commuters living in the suburbs were left
with only 3 other alternatives: personal cars, motorbikes and taxis.
Motorbike
They are fast and affordable, but they are not always convenient for white-collar workers wearing suits to
the office, especially on rainy days.
Taxi
Taxis are safer and more comfortable, but less accessible because they cost much more.
$300/ month
The basic fee
$0.51
The kilometer price
$0.56
Average kilometers
~ 10
Solution: GoDee
GoDee’s founders decided to make buses smarter and more user-friendly. They tackled the problem by converting
traditional buses into a modern service provider offering a convenient and predictable ride that’s just one
click away.
An innovative transportation solution that improves commuters’ daily lives, reduces environmental pollution
and provides affordable commutes and stress-free service.
$65/ month
One trip
$1.29
Trips a day
2
Days a month
~ 25
Mad Devs & GoDee collaboration
Mad Devs consulted with GoDee in the project’s early stages to assist with the technology stack choice and
step-by-step planning. Then, several of our positively mad developers worked on GoDee’s smart urban bus
management system as an extended part of the team.
Minimum viable product MVP
Before investing a considerable amount of money in building software, hiring personnel and acquiring
minibuses, GoDee wanted to
develop an MVP
to understand
the market fit potential.
Although services such as GoDee exist in other parts of the world, simulating these programs in Ho Chi Minh
City was pointless because the city’s commuting culture is quite different. That’s why user feedback was
crucial to its improvement and key to its current rapid growth.
Live chat feature
Over the time period of three months, our integrated live chat feature collected extensive feedback
from users to make white-collar workers’ commutes easier.
Trip request
This feature enabled GoDee to analyse the actual demand for travel to various Ho Chi Minh City
districts.
Before & After
GoDee 2018 VS. GoDee 2021
Development goals
GPS
We use GPS data to track buses, and we have developed an algorithm that predicts bus travel/arrival time using a geocoding service that also calculates delays related to traffic jams and their severity. This predictor functionality calculates the estimated arrival time on specific routes. It allows our passengers to check whether their requested bus will arrive on time, considering traffic jams.
Payment method
Cashless payments are becoming more popular in Vietnam, so we have integrated Stripe service into GoDee, enabling passengers to pay with credit cards easily and quickly.
We have also developed an API for flawless third-party service integration. Visa/Mastercard, AmEx, MoMo and JCB are integrated into the GoDee user app to facilitate cashless payments.
Online time-tables & live location tracking
To help make the GoDee app easier to use, we created a system that tracks bus locations in real time. This means that every user can book a seat as their bus approaches their location.
Referrals
To add to the commuter experience, inside the shuttle bus application, users can share referrals and get free rides as bonuses. After receiving a referral code from a referrer, the user can input the code from the booking confirmation as a promo code and enjoy one free ride. Meanwhile, referrers also receive a reward with "an “X" number of free rides.
The best possible routes
Depending on passengers’ requests, the system allows drivers to construct the best possible routes automatically. If there are no orders from passengers, drivers will skip stops along the route.
Mobile application for passengers
Ticket booking process is intuitive — the passenger needs to select the pick up and drop off points, choose the departure time in the schedule, and book the ticket. The most suitable route will be found automatically.
Mobile applications for drivers
The drivers’ transit app enables them to pick up passengers from bus stops, according to their previously booked tickets.
Intelligent management panel
Used to create routes, get reports and map current active routes.
Intelligent management panel
GoDee's rapid growth since its early stages required easy-to-scale business processes and automated route
management. Although, in theory, everything can be done with an army of sales representatives and route
operators, GoDee wanted to automate routine operations so it could expand to other cities and countries.
One manager and one customer support representative can manage more than ~2500 trip requests per month and
~25,000 passengers per month.
Smart route planning
How can we create profitable yet convenient user routes?
Let users send trip requests and tell you what works for them. This
feature was available initially through the MVP phase, and it enables GoDee route managers to build
effective routes by understanding real commuter demand.
Inside the transportation application, users can submit a trip request with pick-up and drop-off locations
at the desired time. The request is added to the list on the managers' dashboard.
Prim's algorithm
Prim's algorithm is used to effectively connect the dots on a map. This is how a trip request list is
transformed into a map, where new potential routes are displayed for easier overview. The algorithm connects the
dots and the map’s possible routes. Our aim is to connect as many dots as possible while keeping the longevity
under 20 km.
Trips Monitor
The Trips Monitor feature enables operators to track every bus in real time and collect data on late or
early arrivals. More importantly, the operator can contact drivers or passengers quickly if necessary.
The Trips Monitor dashboard displays the following information:
Drivers' locations on mini map in real-time
Late and early departures of buses
Complete bus schedule weeks in advance
Notice to driver that a GoDee client has not been picked up at a bus stop
Number of passengers assigned to each stop and driver
Historical information through filters
Route optimization
With the help of detailed drivers' performance data, Mad Devs’ Pifia microservice enables route managers to
optimize ETA (estimated time of arrival). Pifia shows more accurate arrival and departure times with just
one click.
Examples of early and late departure times:If Pifia determines that a minibus is usually late due to increased traffic at 5:35 pm and not 5:30 pm,
it alerts the route manager to shift the arrival time to 5:35 pm. Five minutes might sound minor, but
these small optimizations add up.
Real-time ETA
In addition, Pifia shows in real time the approximate late/early departures.
Thus passengers who are waiting for the ride always know whether the bus is coming late and how long it
will take.
The information is displayed on their mobile application.
The infrastructure is hosted on the Digital Ocean developer cloud.
Our applications send requests to the Nginx server, and then they are processed via the gRPC framework and
each application is addressed to separate APIs. These APIs refer to Redis quick-caching Streams and the
Georeferencing service, which allows bus drivers to be on track along their routes.
Then all information, collected and processed by these services, is controlled via the Web Admin panel,
which is connected to the PostgreSQL database, OSRM, Firebase and push notification services. We use Docker
containers throughout the development process.
Technology stack
Open Street Map
Google Maps
PostgreSQL
Docker
Nginx
Redis
Python (Django)
Golang
Kotlin
Atlassian
Swift
Firebase
TestFlight
Datadog
Android
Suite
Jira Software
GRPC
iOS
UptimeRobot
Mapbox
Vue JS
Sentry
Here Traffic
Basecamp
Monitoring
We believe that every production system requires proper monitoring. For this purpose, we use the Datadog
service, which allows us to discover possible issues before they affect our users.
Here is an example of our monitoring configuration for the GoDee project:
Stable & Scalable solution
Transportation and logistics software has zero tolerance to downtime. Imagine hundreds of passengers not
being able to book their tickets, drivers not knowing where to pick up/drop off passengers or operators
seeing empty screens.
GoDee’s microservice architecture and the quality of the solution make it easy for each Mad Devs developer
to deploy new features without causing spikes in downtime. On top of this, 75% of code is covered by various
tests and has detailed documentation and pull requests. GoDee's business model greatly benefits from
economies of scale. Thus, increased demand from Ho Chi Minh citizens is backed up by GoDee's unchanging low
cost for infrastructure.
Impact
GoDee faced the challenge of changing people’s habits. To grow the user base, we needed to create an
extremely helpful and hassle-free solution that offers an alternative to expensive taxis and inconvenient
motorbikes. It was also key that it be predictable, affordable and ‘green’ by design.
60
Total routes
30
Active routes
25K
Passengers per month
Meet the team
Oleg Puzanov
CTO
Ruslan Kasymov
QA Engineer and PM
Rustom Kulbatyrov
Android Developer
Vladimir Pan
QA Engineer
Belek Abylov
Backend Developer
Bakhtiyar Ganyev
iOS Developer
Gennady Karev
Backend Developer
Aleksandr Krivov
UX/UI Specialist
Vlada Arevkova
UX/UI Specialist
Erik Sultanaliev
Backend Developer
Myrzabek Kylychev
Android Developer
Pavel Pushkarev
iOS Developer
We built the platforms from scratch with the Mad Devs team, who dedicatedly supported and guided us to take
proper action on several ideas and requirements. We have attracted 27,000 users so far, thanks to their
continuous support for improvement and development.
The app-based system allows users to find a route, select the time, book a seat and pay for the ride online.
