If you accidentally take the wrong expressway exit in South Korea, you may receive a 900-won discount on the base toll by re-entering through the same toll plaza within 15 minutes. Effective October 1, 2026, this policy applies up to three times per year per vehicle at closed-system toll plazas on publicly funded expressways managed by the Korea Expressway Corporation (KEC), provided the vehicle uses Hi-Pass or another electronic payment method. Privately operated expressways are excluded. Depending on how the discount is processed, it may be applied immediately or deducted approximately two weeks later.
Importantly, the absence of a refund announcement from your Hi-Pass device does not necessarily mean you are ineligible. You need to distinguish between the eligibility requirements and the toll settlement process.
How the Wrong-Exit Toll Discount Works
South Korea's wrong-exit toll discount does not cancel every toll transaction the moment a vehicle re-enters the expressway. Instead, it reduces the base toll by 900 won for vehicles that satisfy specific requirements, including cases where the toll has already been paid.
Suppose you are driving along an expressway and accidentally leave through an exit before your intended destination.
You pay the toll when passing through the toll plaza, immediately turn back using the permitted road network, and re-enter through the same toll plaza. The entire process takes 10 minutes.
In this situation, you satisfy the time requirement because you re-entered within 15 minutes. However, meeting the time requirement alone does not guarantee the discount.
You must also confirm that the toll plaza belongs to the closed-system network of a publicly funded expressway, that you used Hi-Pass or another electronic payment method, and that the vehicle has not exhausted its annual discount allowance.
You must also distinguish between being eligible for a discount and the date on which that discount appears in your payment records.
South Korea's Ministry of Land, Infrastructure and Transport (MOLIT) explains that the base toll may be deducted immediately when exiting a publicly funded expressway. In cases requiring additional verification of travel records, the deduction may take approximately two weeks.
For this reason, reviewing your actual toll settlement records is more reliable than determining eligibility solely from a payment notification.
Eligibility Requirements: Same Toll Plaza, Within 15 Minutes, Up to Three Times a Year
To qualify for the wrong-exit discount, a vehicle must satisfy all applicable conditions concerning the road type, re-entry location, elapsed time, payment method, and number of previous uses.
The eligibility requirements are as follows.
| Item to Check | Discount Requirement |
|---|---|
| Effective date | October 1, 2026 |
| Eligible roads | Publicly funded expressways managed by the Korea Expressway Corporation |
| Eligible toll plazas | Closed-system toll plazas |
| Re-entry time | Within 15 minutes of exiting |
| Re-entry location | The same toll plaza used to exit |
| Payment method | Hi-Pass or another electronic payment method |
| Annual limit | Three times per vehicle per year |
| Discount amount | 900-won base toll |
| Exclusions | Wrong exits at privately operated expressway toll plazas |
A closed-system toll plaza is part of a toll collection system that calculates charges using records of where a vehicle entered and exited the expressway.
One especially important distinction is that returning to the same expressway is not necessarily the same as re-entering through the same toll plaza.
If you accidentally exit and then re-enter through a different interchange, you do not satisfy the same-toll-plaza requirement.
The annual limit also applies to the vehicle, not to the individual driver.
If several family members take turns driving the same vehicle, they do not each receive a separate allowance of three discounts per year.
Why Your Hi-Pass Device May Not Announce the Discount
Under the announced policy, Hi-Pass devices do not necessarily provide a separate voice announcement for the wrong-exit discount. Therefore, the absence of an audible discount notification does not mean your vehicle has been excluded.
There are three important points to remember.
First, even if your Hi-Pass device announces a toll payment, you should separately check whether the wrong-exit discount has been processed.
Second, the policy provides for an immediate base toll deduction in applicable wrong-exit cases at toll plazas on publicly funded expressways.
Third, for certain travel records involving both publicly funded and privately operated expressways, confirming whether a wrong exit occurred can take additional time. In such cases, the announced settlement method provides for an automatic deduction approximately two weeks later when the vehicle uses a publicly funded expressway.
However, this does not mean that every vehicle mistakenly exiting at a privately operated expressway toll plaza qualifies for a discount.
Wrong exits occurring at privately operated expressway toll plazas themselves are excluded from this program.
In other words, the timing of an automatic deduction should not be confused with the types of roads eligible for the discount.
How to Check Your Discount or Apply for a Refund
The wrong-exit base toll discount may be processed through a subsequent automatic deduction. Drivers can also apply directly for a refund.
According to MOLIT, direct refund applications are available through South Korea's Expressway Toll website and the mobile application known as 'Expressway Toll+'.
To review your toll records and determine whether a discount applies, follow these steps:
1. Visit the Expressway Toll website or open the 'Expressway Toll+' mobile app.
2. Review the toll transaction history for your vehicle.
3. Check whether the toll plaza where you mistakenly exited and the one where you re-entered are the same.
4. Confirm that the time between the two toll plaza records is within 15 minutes.
5. Check whether a discount or refund application is available. If eligible to apply, follow the instructions provided by the service.
The exact menu names and application status should be confirmed through the service's own guidance.
Does Every Refund Take Two Weeks?
No. The approximately two-week period does not mean that every refund application will necessarily be completed within that time.
The government's two-week guidance refers to the expected timing of automatic deductions in cases requiring verification of travel records. It does not guarantee a uniform processing period for separately submitted refund applications.
In particular, the automatic deduction after approximately two weeks is associated with subsequent use of an eligible publicly funded expressway. Drivers who prefer a separate refund should check whether a direct application is available.
Are Privately Operated Expressways Eligible?
No. This base toll discount does not apply when a driver mistakenly exits through a toll plaza on a privately operated expressway.
The policy was introduced for publicly funded expressways operated by the Korea Expressway Corporation.
It is important to understand the distinction between publicly funded and privately operated expressways in South Korea.
A publicly funded expressway is built using government funding and managed by the Korea Expressway Corporation. A privately operated expressway is built and operated through private investment arrangements.
Although both are described as expressways, their operators and applicable toll policies may differ.
For example, a vehicle that mistakenly exits through a closed-system toll plaza on a publicly funded expressway and re-enters through the same toll plaza after 10 minutes may qualify for the discount if all other requirements are met.
By contrast, if the same situation occurs at a privately operated expressway toll plaza, the driver cannot receive the 900-won base toll discount under this particular program.
Therefore, the first thing to check in your travel history is not simply the name of the expressway, but which operating system the toll plaza where you mistakenly exited belongs to.
How Much Can You Save? Calculating the Annual Maximum
The discount is 900 won per eligible occurrence, corresponding to the base toll at a closed-system toll plaza. Each vehicle can receive the discount up to three times per year.
The following calculations are the author's examples, assuming that all eligibility requirements are satisfied and the vehicle still has its annual discount allowance available.
One eligible occurrence: 900 won × 1 = 900 won
Two eligible occurrences: 900 won × 2 = 1,800 won
Three eligible occurrences: 900 won × 3 = 2,700 won
Therefore, the maximum total discount available to one vehicle under this program in a single year is 2,700 won.
However, this amount represents the combined base toll discounts permitted by the program. It does not mean that the entire expressway toll is waived.
Additionally, once a vehicle has received its third discount of the year, a fourth wrong exit during the same year will not qualify for another discount under this program.
The 15-minute re-entry rule should not be mistaken for an unlimited free re-entry policy.
What Should You Do If You Take the Wrong Exit?
If you realize that you have taken the wrong exit, do not make sudden or unsafe lane changes or reverse your vehicle. Continue along a legal and safe route.
One reason this policy was introduced was to address not only the financial burden of duplicate base toll charges caused by mistaken exits, but also dangerous lane changes by drivers attempting to avoid those charges.
If you have already exited, check whether you can safely return through the same toll plaza. Never drive dangerously just to qualify for a toll discount.
When reviewing your toll charges afterward, check the re-entry time, whether the same toll plaza was used, the road operator, the payment method, and the number of discounts already applied to the vehicle that year.
If unpaid Hi-Pass toll records are also taking longer than expected to appear, you may need to check the unpaid toll inquiry service separately.
However, delayed unpaid toll records and the wrong-exit base toll discount are different issues. An unpaid toll record not appearing does not prove that a discount has been processed.
Frequently Asked Questions
Does Re-Entering Within 15 Minutes Make the Entire Toll Free?
No. If all conditions are satisfied, the program provides a 900-won discount on the base toll. It does not waive the entire expressway toll.
Are Vehicles Using Payment Methods Other Than Hi-Pass Eligible?
Yes. Vehicles using electronic payment methods other than Hi-Pass are also covered. However, vehicles paying in cash are not eligible for this discount.
Can I Re-Enter Through a Different Toll Plaza?
No. The toll plaza where you mistakenly exited and the toll plaza where you re-enter must be the same. Re-entering through a different toll plaza does not satisfy the program's requirements.
If My Hi-Pass Device Does Not Announce a Refund, Does That Mean I Am Ineligible?
Not necessarily. The discount may be processed without a separate voice announcement. For cases eligible for subsequent automatic deductions, the announced settlement process may take approximately two weeks. Drivers who want a direct refund can apply through the Expressway Toll website or mobile app.
What to Check Before Requesting Your 900-Won Discount
If you accidentally take the wrong expressway exit in South Korea, check your actual re-entry records rather than relying only on the amount shown in a payment notification. Confirming that you returned through the same toll plaza within 15 minutes and that the road is covered by the program will help you determine whether you qualify for the 900-won discount.
