Gatelight · for iPhone and iPad
Can my car go in there? Now, or at another time.
Gatelight shows whether your car may enter a French low-emission zone (ZFE) at the place and time you choose. Where a zone is still in its warning period, it shows the date fines start.
Coming soon to the App Store
How it works
- Pick your carChoose the class badge on your windscreen (0 to 5, or no class) and the type of vehicle. No badge, or not sure of the class? Gatelight works it out from the fuel and the Euro standard on the registration document, or from the date of first registration.
- Find the placeSearch an address, tap a zone on the map, or tap Here. Save the places you drive to.
- Read the verdictOne line says whether the car may enter, then the rule in a sentence, where it comes from and the date it was checked.
- See when you can drive inA strip across the week shows the hours when the car may enter, so you can pick another time.
What the verdict can say
- AllowedNo rule stops this car there at that time. If a rule starts later, the verdict says from which date.
- Not allowedA rule applies and fines are already in force; the fine that applies is shown.
- Not allowed now, but no fines yetA rule applies, but the zone is still in its warning period. The verdict gives the date fines start.
- Needs a stickerThe zone lets the car's class in, but the car has no sticker.
- Rules unknownThe zone is on the map, but its rules have not been checked against the official order yet, or the date they are known to has passed. Gatelight says so and links to the zone's official page instead of guessing.
What is in it
A map coloured for your car
Zones are drawn for the car you picked and the time you chose: green where it may enter, red where it may not, striped where fines have not started.
Every rule shows its source
Each zone carries a link to the official order and to the zone's own page, and the date its rules were last checked.
Find your class
Step by step from the registration document: type, fuel and Euro standard or first registration date. The result is a class, one sentence of why, and a link to the official classification table.
Rules update without an app update
Gatelight downloads a signed rules file while you use it. If the download fails, the rules already on the phone stay. The file is open data.
Works without a signal
Zones and rules live on the phone. Only address search, the map background and Pro purchases need a connection.
You ask, it answers
Gatelight checks when you ask. It does not track your car and sends no alerts when you near a zone.
Free, and what Pro unlocks
Free
- The map of zones, coloured for your car
- Find your class from the registration document
- Verdict for now, or any time today
- The "when you can drive in" strip for today
- One car and two saved places
- Zone rules, dates and sources
- Rules updates
Gatelight Pro
- Verdict for any date and time
- The strip for the next seven days
- Unlimited cars and saved places
Gatelight Pro is an auto-renewing subscription: $1.99 a month or $9.99 a year in the US, with the matching App Store price in other countries. There is no free trial; the free part is the trial. If a subscription ends, nothing is deleted. Details are in the terms.
France, for now
The rules cover French low-emission zones (ZFE), in the zones listed on the data page with the date each one was checked. A place in another country gets the answer "this country is not supported yet". The interface is in English, German, Spanish, French, Japanese, Korean, Portuguese (Brazil), Russian, Thai, Vietnamese and Chinese (Simplified); the rules are French.
A French low-emission zone asks for a Crit'Air certificate, the sticker on the windscreen. Gatelight does not sell, issue or process it: it only links to the French government's own site for the certificate, certificat-air.gouv.fr, which serves drivers from other countries as well.
The rules of four zones, written out in French and checked on 22 October 2026: ZFE Grand Paris, ZFE Lyon, ZFE Toulouse and ZFE Marseille.
What Gatelight does not do
Gatelight is an unofficial app. It is not affiliated with the French state or with any city. The rules are retold from the official orders and may change: only the order itself is binding, and on the road, the signs. The app does not take pollution peaks or personal exemptions into account.
- It shows the rules as checked on the date shown, not as they are this minute.
- It does not cover temporary traffic limits during pollution peaks; it points to the official map for them.
- It does not plan routes, and it does not pay fines or fees.
What stays on your phone
Your car, your saved places and your settings stay on the phone. Address search is Apple Maps search, the rules file comes from this site, and Pro purchases go through the App Store and are confirmed by RevenueCat. Everything is spelled out in the privacy policy.
Last reviewed 27 October 2026