New app
Lái Chuẩn
Road sign lookup + Decree 168 penalties
Scan any road sign with AI → instantly see its name and the per-vehicle penalty per Decree 168/2024/NĐ-CP. 300+ signs and 600+ violations at your fingertips.
- 301
- Signs
- 606
- Violations
- AI
- Photo scan
- Free
- For all users
What's inside
Everything a driver needs to know
No fluff — just signs, penalties, and how to avoid violations.
300+ signs from Wikipedia
5 groups: prohibition, warning, mandatory, information, auxiliary — full P/W/R/I/S codes per QCVN 41:2019/BGTVT.
AI scan via Gemini Vision
Snap or pick a photo — AI identifies name + group + confidence, with penalty for each vehicle type.
Penalties from Decree 168/2024
600+ violations digitized from Decree 168/2024/NĐ-CP — fine amounts highlighted for cars / motorbikes / bicycles.
Search with or without diacritics
Type "vuot den do" still finds "Vượt đèn đỏ" (running red light). Searches sign names, codes, violations, full decree text.
Sign ↔ violation linking
View sign P.102 (No entry)? App shows linked violation with 18-20M VND fine for cars right away.
Bookmarks + offline history
Save signs you want to remember. Local history auto-recorded. Sign in with Google to sync across devices.
Bilingual VI / EN
Every sign name and violation description in both Vietnamese + English — useful for foreigners driving in Vietnam.
100% free
Unlimited lookups. AI scan has a free quota of 5 per day (sign in with Google to extend).
Inside the app
In a driver's hand
One purpose only: drivers know which sign maps to which fine — in seconds.
Home
Prominent search, 5 sign categories, and a Memorize quiz one tap away.
Sign detail + penalties
Sign image + per-vehicle fines per Decree 168, with linked violations.
Memorize quiz
10 questions per round. Photo → name. Score at the end. Active recall.
How Lái Chuẩn pays for itself
Lookup is free. AI scan extends via ads.
Sign database + Decree 168 + memorize quiz are all free and offline. The AI photo scan (Gemini Vision) has a 5/day quota that extends via partner offers.
Lookup + search + quiz
Fully free. No quota, no ads, works offline.
AI photo scan
5/day free. +N per partner-offer click. Resets daily at UTC midnight.
How it works
Three steps. That's it.
Step 01
Snap or pick an image
Aim the camera at any sign or pick from your gallery. The app compresses the image before upload to save data.
Step 02
AI identifies
Gemini Vision reads the image, returns sign name, group (prohibition / warning / mandatory / …), and QCVN code.
Step 03
See the penalty
App shows the penalty table per Decree 168/2024 — fine amount highlighted, comparing car / motorbike / bicycle.
Resources
Policies & support
Try Lái Chuẩn today
Free for lookup + quiz. AI scan extends via ads. No subscription.
Open Lái Chuẩn web →