ERP X

Mobile app design, system design, user research

ERP X was designed to question the need for ERP 2.0, as an alternative way to facilitate traffic payments. No hardware installation, less privacy concerns, and better user experience. It costs S$480 million less (£280 million) compared to ERP 2.0, which took the Land Transport Authority (LTA) 10 years to develop.

I started this project as the lead designer, together with a team of 3 software engineers, 1 policy strategist and 1 product manager. I led research and testing, and did all the UI.

We took it to cabinet ministers, the Transport Ministry, the Land Transport Authority, and the Traffic Police. It was approved as an official pilot, and tested it with 100 drivers on the road. Unfortunately, implementation of ERP 2.0 had already begun before the project commenced, and it was not possible to overturn the decision.

Fully automated, hands-free.
Just traffic cameras and phones,
with clear spend summaries.

  1. Traffic cameras are used to scan vehicle plates using Automated Number Plate Recognition (ANPR).

  2. All payments are automatically charged to your registered credit card on the mobile app.

  3. You get a notification of the transaction as you drive past a camera marking a congestion zone.

  4. Track your monthly and daily spend over time.

The process

Research objectives

  1. Influencing driver behaviour and deterring entry into congestion zones

  2. Simplest way to manage user authentication

  3. Maintaining privacy and security for car sharing

  4. Accuracy and timeliness of notifications and road charges

  5. Determining additional features to be built

KPIs & metrics achieved

  1. User satisfaction (9.6 out of 10)

  2. Registration and set up (30s ~ 1 min)

  3. Plate detection accuracy (97 ~ 99%, all weather conditions)

  4. Notification timeliness (1 ~ 5s after passing a camera)

  5. Prefer to use ERP X over existing systems, ERP 1.0/2.0 (100% yes)

Early UI diagram

I built the first version of the live prototype in Flutterflow, in 3 days from when we first started the project. Tested the fields and typing interactions with elderly drivers. Sat in 10 cars. Then iteratively created improved versions on Figma.

Feature map

I made this to plan the features we’d need. Plotted on an end-to-end user journey, based on user feedback.

Red = not doing well, gaps to fix

Green = doing well, users love this

Yellow = in progress

Final UI and colour palette