
HMI & Displays
Custom HMI Solutions for Public Transport Systems
Short on Resources or Expertise? We Power Your Next Transport HMI Project
When in-house teams hit their limits, Promwad steps in. For over 20 years, Europe’s leading transport providers have trusted us to engineer certified HMI subsystems — rugged hardware and embedded software that keep projects on track and fully compliant with your technical specifications and industry standards.
The Problem We Solve
What Slows Down HMI Projects — And How to Accelerate Yours
Most transport technology providers face the same challenges:
- lack of engineers with the right competencies,
- limited in-house experience with complex compliance standards,
- and pressure to meet strict time-to-market requirements.
Delays mean lost tenders or contracts, and that is how engineering gaps turn into financial risks.
At Promwad, we help you avoid these pitfalls by engineering the critical HMI subsystems — hardware modules, embedded software, and certified components — that keep your roadmap on track.

Devices & Systems We Design
From Passenger Displays to Ticketing Units — Engineering the Critical HMI Blocks You Need
We support transport technology providers at any stage of their HMI development — from single modules to complete subsystems. Our teams plug in where you need extra capacity or niche expertise, whether it’s rugged hardware design or embedded software.
Key HMI building blocks we engineer for public transport:
Passenger displays
On-board LED/LCD destination signs, station platforms, and overview boards for maximum visibility and durability.
Infotainment & multimedia
Energy-efficient TFT content platforms delivering next-stop info, real-time updates, and advertising.
Driver terminals & control interfaces
User-friendly HMI panels for drivers and operators with seamless PIS, CCTV, and TCMS integration.
Ticketing & POS systems
Mobile and stationary solutions supporting RFID, barcode, and contactless payments with accessibility-first design.
Real-time passenger information (PIS)
Integrated platforms for data collection, processing, and distribution across displays, apps, and control centers.
Applications
Trusted Across Buses, Rail, Airports, and Smart Cities
Bus & coach
Reliable destination displays, infotainment, and driver terminals that reduce operational complexity and enhance passenger journeys.
Tram & light rail
Platform displays and control panels enabling real-time passenger guidance and seamless integration with networks.
Railways & metro
Industry-ready TFT/LCD systems and PIS platforms that streamline certification and reduce risks of project delays.
Airports
Flight information display systems (FIDS), baggage claim monitors, and multimedia kiosks designed for maximum uptime.
Smart cities
Variable message signs (VMS), parking guidance, and urban digital totems delivering real-time clarity to citizens.
Highways & traffic
Lane control and tolling displays engineered for visibility, reliability, and safety in extreme outdoor environments.
Technology & Expertise
Deep Engineering Expertise for Transport HMI Systems
Hardware modules & embedded platforms
Railway-grade embedded systems tested for temperature extremes, vibration, humidity, and electrical immunity
Embedded software & connectivity
RTOS, Linux, IoT, 5G, Wi-Fi, and mesh communications enabling real-time data exchange
Subsystem integration & data flow engineering
Passenger information systems with GPS-triggered announcements, CCTV feeds, predictive analytics, and modular POS architectures
Why Promwad
Your Plug-In Engineering Partner, Not Just a Contractor

Targeted expertise, on demand
Whether you extend your in-house team or outsource a turnkey project, we reduce overhead while scaling your engineering capacity. Accelerate your time-to-market with our agile workflows and rapid prototyping!

Proven experience in transportation
With two decades of expertise, we design industry-compliant solutions. Our engineers have already powered complex embedded systems in automotive, industrial, and public transport domains.

Strong vendor ecosystem
We partner with leading semiconductor and technology providers (Qualcomm, NXP, and others), giving our clients early access to advanced chipsets, reference designs, and tech support.
20+ years
in embedded & transport engineering
200+
engineering systems delivered across Europe
100%
compliance with industry standards
Case Studies in HMI & IVI Design
How Leading Transport Tech Companies Accelerated Their HMI Launches With Us
Let’s Shape Your Next Transport HMI Project — Together!
Discuss your HMI challenge with our engineers — get expert feedback! We will contact you today or the next business day. All submitted information will be kept confidential.