About Road Sign Factory

Road Sign Factory provides traffic engineers, designers, and enthusiasts with a standards-compliant tool for creating professional road signage. It is a web service built and served to meet the modern needs for generating quality designs.

Key features:

Comply to Hong Kong TPDM
Professional Export Quality
No Installation Required
Interactive and Responsive UI/UX
CAD Tool Grade Functionality
Open Source & Free
Save & Load with Auto-Save
Professional sign design illustration

Development Timeline

Traditionally, traffic signs are designed by professional engineers as a package of a roadworks project with CAD. While CAD is powerful in generating detailed drawings, characters and symbols must still be drawn carefully block by block, stroke by stroke. Sign making was like a renaissance of old technology Movable Printing Press in modern times. A need to speed up the design process within a tight project timeframe is called. This application is the result of seeking a modern and streamlined workflow for road sign design.

Traditional engineering drawing for traffic sign
April 2022 Initial Idea
First Concept
The original idea for Road Sign Factory was conceived as a solution for creating professional traffic signage with modern web technologies. The project was shelved after prototyping due to the technical difficulties encounter when prototyping.
2022 Initial Concept - Early sketches and planning documents
May 2024 TPDM Release
HKSAR TPDM Public Release
Transport Department of HKSAR publicly released the Traffic Signs and Road Markings Manual (TPDM), providing comprehensive standards and guidelines that became the foundation for professional traffic sign design.
January 2025 Restart
Project Revival & Development
After a period of dormancy, the project was restarted with renewed focus and intensive development efforts to build the complete application.
February 2025 AI Boom
AI-Powered Vibe Coding Era
The AI revolution transformed development workflows with advanced coding assistants, enabling rapid prototyping and intuitive "vibe-based" programming approaches that accelerated the project significantly.
May 2025 Public Prototype
First Public Release
The first public prototype was released, marking a major milestone with a functional traffic sign design tool available to users worldwide.
May 2025 Prototype - First public release interface screenshot
Future Ongoing
Continuous Enhancement
Ongoing development with regular updates, new features, and improvements based on user feedback. See our planned feature list.

Technical Information

Road Sign Factory is built using modern web technologies including HTML5 Canvas, JavaScript ES6+, and responsive CSS. The application uses the Fabric.js library for advanced canvas manipulation and supports vector graphics export through SVG generation.

The application features an intelligent save system that automatically stores your work in the browser's local storage, preventing data loss. Additionally, manual save and load functionality allows you to manage multiple projects and create backups of your designs.

The export function supports multiple file formats including PNG (raster), SVG (vector), PDF (document), and DXF (CAD). PDF export is handled using the jsPDF library, which converts the canvas content to high-quality PDF documents suitable for printing and sharing. DXF export is powered by the dxf-writer library, enabling seamless integration with professional CAD software and engineering workflows. This allows your traffic sign designs to be easily imported into AutoCAD, SolidWorks, and other industry-standard design tools.