智駕通 — a Hong Kong tunnel app that ranks the three harbour crossings

The tunnel decision is made on bad information

Since time-varying tolls arrived, choosing a harbour crossing means weighing a toll that changes by time of day against a queue you cannot see. Most drivers pick by habit, and habit is frequently wrong — the cheapest tunnel at 8:40am is not the cheapest at 9:10am, and the fastest one depends on an incident you have not heard about.

智駕通 turns that into a ranked list. It reads the Transport Department's journey time indicators, applies the current toll for your vehicle class, and orders the three crossings so the decision is a glance rather than a guess.

What the Hong Kong tunnel app does

One core verdict, plus the road information around it.

• A ranked three-tunnel verdict. Crossings with live journey times come first, sorted ascending; ties are broken by the lower toll; congested, closed or no-data crossings sink to the bottom. The fastest crossing that actually has live minutes is flagged as the winner — and a closed tunnel can never win, which is the kind of rule that only matters on the day it matters.
• Tolls by vehicle class. Time-varying tolls are applied per vehicle class rather than assuming a private car, cross-checked against the Transport Department's published schedule and the corresponding government press release.
• Live journey times. From the journey time indicator system, which publishes estimated minutes and a congestion colour per route and refreshes every couple of minutes.
• Traffic cameras. Camera views for the routes you care about, because sometimes the only thing that settles a decision is seeing the queue.
• Alerts on your routes. Save the routes you drive and the app can notify you when there is an incident, a closure, or an Observatory warning affecting them. A background check can run roughly every fifteen minutes, off by default to preserve battery — stated plainly in the app rather than buried.
• Cross-border and parking. A screen for the northbound crossings, and parking information integrated so the journey is covered to the end rather than to the tunnel exit.
• Driving mode with spoken alerts. A simplified screen for use while driving, with alerts read aloud rather than requiring a look.

Open data, cross-checked

Everything comes from Hong Kong government open data — the Transport Department's journey time and incident feeds, toll schedules, and the Observatory for weather. There is no backend server: the app talks to the public endpoints directly, which is why it can be free and why there is no account.

The toll table was verified against two independent official sources rather than one, and the parsers are written to tolerate missing fields and skip malformed rows instead of failing or, worse, presenting junk as a journey time.

Who it is for

Anyone who crosses the harbour by car regularly, especially at peak times where the toll and the queue both move. Over a month of commutes, consistently picking correctly is worth real money and real time.

Commercial drivers, for whom the vehicle-class toll distinction is not an academic detail. And anyone driving north across the border, where the queue is the entire trip planning problem.

Data sources and disclaimer

Journey times, incidents, cameras and toll schedules come from Hong Kong government open data sources including the Transport Department and data.gov.hk, with weather from the Hong Kong Observatory. The app is unofficial and not affiliated with any government department or tunnel operator.

Journey times are estimates published by the Transport Department, not guarantees. Tolls change by government decision — the roadside sign and the official schedule are authoritative. Do not operate the app while driving; use driving mode and spoken alerts. It is free and ad-supported with an optional purchase.

Frequently asked questions

How does it decide which tunnel is best? Crossings with live journey times are ranked ascending, with ties broken by the lower toll for your vehicle class. Congested, closed or no-data crossings sink to the bottom, and a closed tunnel is never flagged as fastest.

Does it handle time-varying tolls? Yes, per vehicle class, using a toll table cross-checked against two independent official government sources.

Where do the journey times come from? The Transport Department's journey time indicator system, which publishes estimated minutes and a congestion level per route and refreshes every couple of minutes.

Can it warn me about incidents on my usual route? Yes. Save routes as favourites and enable alerts. There is also an optional background check roughly every fifteen minutes, off by default to preserve battery.

Does it cover crossings to the mainland? Yes — there is a dedicated northbound crossing screen.