How to Book a Written Test Slot at Hirabari, Aichi — Step-by-Step Guide

2026-07-10 · GaimenGo Team

Aichi Prefecture's written test reservation system fills up fast and is entirely in Japanese. Here is a clear, step-by-step walkthrough so you don't waste your slot window.

Why This Reservation System Trips People Up

If you are converting a foreign driver's license in Aichi Prefecture (外国免許切替 / gaimen kirikae), the written knowledge test at Hirabari Driver's License Examination Center or Higashi Mikawa Driver's License Center cannot be booked by simply walking in. Aichi Police runs this through a third-party e-application platform built by Graffer, and the booking window is short and competitive. Knowing the exact steps in advance saves you from missing your chance. If you still need to gather your documents, start with our Document Conversion Checklist.

The Booking Link

All reservations go through the Aichi Prefectural Police Electronic Application System:

https://ttzk.graffer.jp/pref-aichi-police

This is an official police-operated platform, not a private agent service, and you do not need to pay a third party to use it.

Step-by-Step Reservation Guide

1. Create or log into a Graffer account. Go to the link above, click "ログイン" (Login) in the top right, then "新規アカウント登録" (New Account Registration) if you don't already have one. You can register using Google, LINE, or an email address.
2. Verify your email. If you register by email, a confirmation link is sent from noreply@mail.graffer.jp. Make sure this address is not blocked by spam filters, then click the link to complete registration.
3. Search for your center using a keyword. Once logged in, use the search box and type:

• 平針 or Hirabari for the Aichi Driver's License Test Center
• 東三 or Tosan for Higashi Mikawa Driver's License Center

1. Pick the exact date and time slot. Search results list individual procedures, each tied to one specific date and reception window (for example, "March 17 Monday, 8:45–9:30 reception"). Choose the listing matching your preferred day and time.
2. Agree to the terms and proceed. Check the box to accept the terms of service, then click "申請に進む" (Proceed to Application) and "次へ進む" (Next).
3. Enter your personal details. You will need to fill in your full name, date of birth, nationality, the country that issued your foreign license, gender, and phone number (numbers only, no hyphens).
4. Review and submit. Confirm all entered details, then click "この内容で申請する" (Submit with this information).
5. Save your provisional confirmation email. You will immediately receive a provisional booking email. This lets you check or cancel your reservation later.
6. Wait for the final confirmation email. A confirmation is sent about two business days before your exam date. You must bring this email (printed or on your phone) to reception. If your booking is invalid for any reason, no confirmation email is sent — so if you don't get one, don't go.

Language Options for the Written Test

The knowledge test is available in up to 20 languages, but the language offered depends on the day of the week. At Hirabari, English, Vietnamese, Portuguese, and Chinese are among the languages requiring reservation, while several others (Spanish, Korean, Thai, and more) do not require one. Always check the current language schedule on the Aichi Prefectural Police website before booking, since it changes periodically.

Why Slots Disappear So Fast

New reservation slots typically open early in the morning, and because there are only a handful of time slots per day, they can be taken within seconds. There is no visible "waiting list" — once a slot is booked, it simply vanishes from the search results. Being logged in ahead of time, with your search keyword ready, gives you the best chance of grabbing an open slot.

Quick Reference

Rules, languages, and time slots can change without notice, so always confirm directly with the Aichi Prefectural Police before planning your visit.