A Startup of BUET Students & Alumni Since 2024

TriChokro
Next Gen Electric Mobility For LMICs

Zero tailpipe emissions, retractable hood, Engineered for Bangladeshi Road, safety from hydraulic brake, comfort from superior suspension.

Designs & Products

Engineered for the unique demands of Bangladesh's roads. Durable, efficient, reliable as BUET.

View Full Specifications

Improved Version of BUET's model

TRC- Pathfinder

The common passenger Triwheeler. Hydraulic braking, MacPherson suspension, and retractable hood.

Range120 km

Features5 People, Steering System, 6h Charge

Speed50 Km/h

Medical Emergency Transportation

Trambulance

Rapid, Affordable, Nimble three-wheeled ambulance. Access narrow lanes with medical-grade interior.

Range150 Km

CapacityMedical Equipment+ Patient+ 3 Caregiver

Speed70 Km/h

TriChokro Cargo

Heavy duty logistics solution for urban delivery.

Coming 2026

Electric
Innovation

SAFEST PASSENGER RICKSHAW

TriChokro Pathfinder

Country's Leading R&D company's Design-1 which solves safety and 8 mechanical issues of Existing Electric Rickshaw. Inspired by BUET's Prof Ehsan's Easy Bike Project and academically and theoretically supervised by him. Improved truss chassis, hydraulic brakes, and an origami hood.

Emergency Response Ambulance

Trambulance.
Saving Lives with Sustainably.

TriChokro Trambulance is a fully electric, three-wheeled ambulance designed for the unique needs of Bangladesh. Its compact size allows it to reach patients where traditional ambulances cannot.

Protecting Futures

Safe. Reliable. Fast.

Take appointment for a meeting with our Founder

Rownak Shahriar Ruhan

The mind behind TriChokro. Merging Automobile Engineering with entrepreneurial spirit to redefine urban mobility in Bangladesh.

Engineering Excellence

We combined real-world driver benefits with robust product features. Every component is chosen for durability and efficiency tweaked for Bangladesh

Aerodynamic Retractable Hood

Retractable roof design lowers air drag and adapts to weather instantly.

Hydraulic Disk Brakes

Triple setup of Disk Brake (Hand, Foot, Handle) gives driver full control.

Industrial Suspension

MacPherson suspension, along with leaf and coil springs, ensures comfort on wheels.

Truss Chassis

The optimized chassis features compact dimensions for improved maneuverability in narrow lanes through SolidWorks and Ansys.

Eco Friendly Battery

We chose Lithium Iron Phosphate (LiFePO₄) batteries over Lead-Acid and Lithium-ion batteries due to cost-effectiveness, longer lifecycle, and minimal environmental impact.

Superior Structure

Design and Dimensions are optimized for 35% more Load Capacity and More passengers with same footprint.

Why TriChokro?

Driving the future of sustainable transportation with tangible benefits for drivers and the environment.

60%

Cost Reduction

Compared to traditional combustion engines, our EVs drastically cut daily operational costs, putting more money in drivers' pockets.

0 Emission

Better World for future

Zero tailpipe emissions mean cleaner air for our cities and a healthier future for the next generation.

Safer Structure & Braking

Our triple hydraulic disk brake system provides superior stopping power, significantly reducing accident risks on busy roads.

About Us

Get in Touch

Book a demo, discuss fleet needs, Collab or have a meeting.

Visit

Kazi Nazrul Islam, BUET
or ME Building, BUET
Dhaka-1000

Call

+880 1714 844677
+8801402667477

Email

rownakshahriarruhan@gmail.com
trichokro.bd@gmail.com

Lifeline for Bangladesh

Emergency Response
For Everyone.

An affordable, tri-wheeled, AI-powered electric ambulance designed to conquer the narrow alleys of Dhaka and the muddy roads of rural Bangladesh.

The Crisis

Why current ambulances
fail us.

In Puran Dhaka, traffic paralyzes large vans. In rural areas, muddy roads are impassable. Traditional ambulances cost 4-5 Million BDT and are often unavailable.

High Cost: Unbearably high for rural communities.

Limited Access: Cannot enter narrow 6m radius roads.

Incoordination: Fragmented contact numbers, no real-time data.

56%

Patients Delayed > 2 Hours

33%

Deaths from Time Delay

10%

Road Access for Vans

VS TRAMBULANCE

100%

The Trambulance Solution

Decentralized outposts and agile design reduce response times by 20-44%.

0.25M

Manufacturing Cost

vs 4M for Hi-Ace

Turning Radius

vs 6m for Vans

10%

Operational Cost

of traditional vans

150km

Electric Range

LiFePO4 Battery

Engineering Excellence

Built for Durability & Safety

Designed in SolidWorks. Simulated in Ansys.
Built by BUET engineers.

Truss Chassis

Replaces linear chassis with a truss structure for 35% less weight and 80% more load capacity (up to 700kg).

Compact Dimensions (10' x 4')
Optimized for narrow lanes
SolidWorks Designed

Origami Hood

A foldable, origami-inspired hood built with MS bars and waterproof polyurethane. Converts instantly from ambulance to medical cargo van.

Reflects Heat Waterproof

CAD MODEL VIEW

ECO

Solar Integration

300W total capacity generating 1.5-2 kWh/day. Covers 15% of total energy needs, specifically powering medical equipment.

LiFePO4

Advanced Power

Lithium Iron Phosphate batteries offer 3000-5000 cycles (vs 500 lead-acid). 80% efficiency and safer chemistry.

Trambulance Arriving

4 Minutes away

Uber-like Model

Smart Decentralized Coordination

Moving away from hospital-based parking to a decentralized outpost model.

AI Route Optimization

Machine learning algorithms predict traffic patterns in Dhaka to find the fastest route.

Paramedic Drivers

Drivers trained in CPR, bleeding control, and oxygen administration (collaboration with BNCC/Red Crescent).

Empowering The Nation

"Trambulance isn't just a vehicle; it's a lifeline for the 99% who cannot access formal ambulance services."

Developed By

Rownak Shahriar Ruhan

Dept. of Mechanical Engineering, BUET

Contact

+8801714844677

rownakshahriarruhan@gmail.com

Dept. of Mechanical Engineering, BUET

Made for
Bangladesh.

The country's first fully locally manufactured electric auto-rickshaw industry. Solving safety, engineering, and environmental challenges.

View Models Why TriChokro?

Electric
Innovation

01.

The Current Crisis

Unsafe electric rickshaws have flooded Dhaka's roads, causing accidents and environmental hazards. We identified three critical failure points.

Safety Hazards

Non-existent braking systems
High center of gravity (tipping risk)
Poor suspension causing injury

Engineering Faults

High aerodynamic drag
Low load capacity wheels
Inferior structural materials

Environmental Impact

Non-recyclable toxic batteries
Industrial waste from imports
Noise pollution from old engines

02.

The Solution

Engineering excellence meets local innovation.

BUET Innovated

McPherson Suspension

Superior ride comfort and stability compared to traditional leaf springs.

Disc Brakes

Modern hydraulic disc brakes replacing dangerous rubber pad brakes.

Aerodynamic Design

Optimized hood and body to reduce drag and increase battery efficiency.

Eco-Sustainable

Recyclable components and battery technology that is not harmful to the environment.

Market Comparison

Feature	Typical Auto Rickshaw	CNG	TriChokro
Cost (BDT)	120k - 150k	250k - 300k	~120k
Braking	Rubber/Drum (Unsafe)	Disc Brake	Disc Brake (Safe)
Safety Level	Medium Risk	Medium Risk	High Safety
Seat Capacity	3	3	5

03.

Product Lineup

Designed for every road and every need.

Base

Base Model

1.8 Lakh BDT

Standard Suspension
Urban Commute Ready

Sealed

Weather Sealed

2.0 Lakh BDT

IP69 Rated Protection
Reliable in Monsoon

Pro

CNG Alternative

2.5 Lakh BDT

High Speed Range
Extended Battery

Rugged

All Terrain

3.0 Lakh BDT

Reinforced Frame
Heavy Duty Suspension

04.

Market Potential

Total Addressable Market (Dhaka) 2,400 Cr BDT

Target Share (2 Years) 10%

1.5 Lakh Vehicles in Dhaka

1.29 Lakh Production Cost

5 Year Profit Projection

26Cr

7.6Cr

16Cr

30Cr

48Cr

> Net profit margin projected: 15-20% by year 5

05.

The Innovators

Meet the team behind the revolution.

The Portfolio of

ROWNAK
SHAHRIAR RUHAN

"Engineering the future of mobility through innovation and entrepreneurship."

Founder of TriChokro. Mechanical Engineering Student at BUET. Merging structural analysis with business strategy to revolutionize the EV landscape.

View CV LinkedIn

01. Professional Saga

2025 - Present

TriChokro

Founder & CEO

Leading a government-funded startup to manufacture electric Easy Bikes. Spearheading the R&D of the "Trambulance" and securing seed funding through the UIHP cohort championship.

Start-up Leadership EV Design Govt. Funded

Nov 2025 - Present

BYD Bangladesh

Internship Trainee

Immersed in the operations of a global EV giant. Focusing on manufacturing optimization, supply chain logistics, and business strategy within the Bangladesh market.

Supply Chain Manufacturing Auto Industry

2021 - Present

Ronograph

Founder & Chief Photographer

Founded a creative agency delivering high-end photography. Mentored 400+ students in visual arts and post-processing techniques.

2016 - Present

Wikimedia BD

Executive Member

Contributing to the open knowledge movement as a Reviewer, Rollbacker, and Jury member for Bangla & English Wikipedia.

Curriculum Vitae

The complete professional history

Rownak
Shahriar
Ruhan

Mechanical Engineering Student (BUET)

Major in Automobile Engineering

Founder, TriChokro

+880 1714 844677

rownakshahriarruhan@gmail.com

Kazi Nazrul Islam Hall, BUET, Dhaka-1000

www.trichokro.com

Education

B.Sc. in Mechanical Engineering

BUET (2021-2026)

4th Year, Last Semester

Higher Secondary Certificate

Notre Dame College (2018-2020)

GPA-5 with Scholarship

Science Group-1

Secondary School Certificate

Adarsha High School (2013-2018)

GPA-5, Talentpool Scholarship

2014 Student of the Year

Software Skills

SolidWorks ●●●●
Ansys ●●●○
MATLAB ●●○○
Adobe Suite ●●●○
MS Office ●●●●

Expertise

Hardware Manufacturing
Production Optimization
Business Analysis
Automobile Engineering

Profile

Expertise in vehicle design, structural analysis of chassis, and NEV operational efficiency. Experienced innovator with award-winning projects, including 'Trambulance' (National Champion, aerodynamic chassis design in Ansys/SolidWorks) and 'TriChokro' (BUET Champion, secured seed funding, led commercial roadmap to production). Passionate about applying technical skills and proven project success to advance sustainable mobility at BYD.

Achievements

National Champion | SofE

Nov 2025

Speak Out for Engineers (IMechE)

Project Trambulance: Innovated an efficiently designed, affordable Tri-wheeled Battery-Powered Ambulance.
Conducted 3D design in SolidWorks/SketchUp with Aerodynamic and Load Simulations in Ansys.
Innovative Chassis and Aerodynamic Origami inspired Hood System earned appreciation.

BUET Champion | UIHP

July 2025

University Innovation Hub Program (ICT Division)

Project TriChokro: Developed an improved and affordable Auto-Rickshaw Model.
Prototype built; mass production deal in progress with Panna Group.
Secured funding from BUET Alumni and Investors.

Entrepreneurial Experience

TriChokro

Founder & CEO

Registered Manufacturing Startup (BIDA)

Founded under guidance of Prof. Md. Ehsan. Leading an 8-member team including Ph.D. holders. Successfully obtained Trade License.
Collaborators: Prof. Md. Ehsan (BUET), Abdul Jawad (PhD, UCSC), Ishraq Rafid (MS, Germany).

Work Experience

BYD Bangladesh

2021, 2023

Industrial Training

1 month training on Manufacturing, Business & Supply Chain.

Rahim Afrooz Battery

Academic Internship

Battery Manufacturing and Maintenance.

Wikimedia Bangladesh

2016-Present

Executive Member

Reviewer, Rollbacker, Jury for Bangla/English Wikipedia.

Ronograph

Founder & Chief Photographer

Photographic agency and instruction (2024).

Ankur International

Publicity Secretary & Project Head

Prohoranto

Chief Editor & Strategist

References

Dr. Md. Ehsan

Professor, Dept of ME, BUET

ehsan@me.buet.ac.bd

Dr. Abdul Jawad

PhD, UC Santa Cruz

abjawad@ucsc.edu

Arian Khan

DMD, Panna Group

01313081133

TriChokro 2024

TriChokro Next Gen Electric Mobility For LMICs

Designs & Products

TRC- Pathfinder

Trambulance

TriChokro Cargo

Electric Innovation

TriChokro Pathfinder

Trambulance.Saving Lives with Sustainably.

Rownak Shahriar Ruhan

Engineering Excellence

Aerodynamic Retractable Hood

Hydraulic Disk Brakes

Industrial Suspension

Truss Chassis

Eco Friendly Battery

Superior Structure

Why TriChokro?

About Us

Get in Touch

Visit

Call

Email

Emergency Response For Everyone.

The Crisis

Why current ambulances fail us.

The Trambulance Solution

Engineering Excellence

Built for Durability & Safety

Truss Chassis

Origami Hood

Solar Integration

Advanced Power

Smart Decentralized Coordination

AI Route Optimization

Paramedic Drivers

Empowering The Nation

Made for Bangladesh.

Electric Innovation

The Current Crisis

Safety Hazards

Engineering Faults

Environmental Impact

The Solution

McPherson Suspension

Disc Brakes

Aerodynamic Design

Eco-Sustainable

Market Comparison

Product Lineup

Base Model

Weather Sealed

CNG Alternative

All Terrain

Market Potential

5 Year Profit Projection

The Innovators

ROWNAK SHAHRIAR RUHAN

01. Professional Saga

TriChokro

BYD Bangladesh

Ronograph

Wikimedia BD

Curriculum Vitae

RownakShahriarRuhan

Education

B.Sc. in Mechanical Engineering

Higher Secondary Certificate

Secondary School Certificate

Software Skills

Expertise

Profile

Achievements

National Champion | SofE

BUET Champion | UIHP

Entrepreneurial Experience

TriChokro

Work Experience

BYD Bangladesh

Rahim Afrooz Battery

TriChokro
Next Gen Electric Mobility For LMICs

Electric
Innovation

Trambulance.
Saving Lives with Sustainably.

Emergency Response
For Everyone.

Why current ambulances
fail us.

Made for
Bangladesh.

Electric
Innovation

ROWNAK
SHAHRIAR RUHAN

Rownak
Shahriar
Ruhan