From 40,000 to 810,000: What the RTS Link Can Actually Carry — If It Learns from Japan
The headline ridership figure is the opening sentence. Here is the full paragraph.
When the Johor Bahru–Singapore RTS Link begins passenger operations — currently targeted for early 2027 — the official projected ridership is 40,000 passengers per day.
That number is quoted in every news article about the project. It is accurate. And it is, in almost every meaningful sense, the least interesting number in the story.
Because the actual question is not what the RTS Link will carry on opening day. The question is what it is capable of carrying — and what happens to Johor Bahru when it approaches that ceiling.
The three numbers you need to understand
The RTS Link is expected to serve 40,000 passengers daily when it launches, with a long-term plan to reach approximately 140,000 daily.
That 140,000 figure — a 3.5x increase from opening — is the official horizon. But the system's physical infrastructure tells a different story about its upper limit.
The RTS Link is designed with a peak capacity of up to 10,000 passengers per hour in each direction.
Run that at 18 hours of daily operation, across both directions:
10,000 × 2 directions × 18 hours = 360,000 passengers per day
That is already 9x the opening figure. But it is still not the ceiling.
What Japan teaches us about what "capacity" really means
The current RTS Link specification uses 4-car trainsets, with trains running every 3.6 minutes at peak. That is how you arrive at 10,000 passengers per hour.
But rail systems do not have fixed capacities. They have current capacities — determined by the number of cars per train, the frequency of service, and the hours of operation. All three of these variables can be adjusted as demand grows.
Japan has spent 70 years refining exactly this process.
The Yamanote Line in Tokyo — one of the world's busiest urban rail loops — runs 11-car trainsets at intervals as short as 2 minutes during peak periods, operating from before 5am to past 1am. That is approximately 21 hours of daily service.
The Paris Métro Line 14 operates with headways as low as 85 seconds. Several lines of the Moscow Metro achieve 90-second peak headways. These are not theoretical limits — they are daily operational realities on automated rail systems comparable in design to the RTS Link.
Now apply the Japanese operating philosophy to the RTS Link:
Scenario: 8-car trains, 90-second headways, 18 hours of operation
Each 8-car trainset, at international LRT loading standards, carries approximately 800–900 passengers at full capacity. At 90-second headways, that is 40 trains per hour per direction.
40 trains × 850 passengers × 2 directions × 18 hours = 1,224,000
Even at a conservative 65% average load factor across all operating hours:
~810,000 passengers per day
This is not a fantasy. It is the arithmetic of what happens when a well-designed, fully-utilised automated rail corridor reaches operational maturity — which is precisely what Japan's busiest lines demonstrate every weekday.
The upgrade path is already designed in
None of this requires rebuilding the RTS Link. The infrastructure — the track, the stations, the viaduct across the Strait of Johor — is already engineered for expansion. Adding cars to trainsets is a procurement decision. Reducing headways from 3.6 minutes to 90 seconds is a signalling and operations decision.
Both are expensive. Neither requires a single metre of new track.
The pathway from 40,000 to 140,000 to 360,000 to 810,000 is a question of time, demand, and political will. Japan did not build the Yamanote Line at its current capacity. It built a line, watched demand grow, and systematically upgraded frequency and rolling stock across decades until the system was running close to its physical limits.
Johor Bahru and Singapore are not starting that journey in 1964. They are starting it in 2027, with 70 years of Japanese operational knowledge available as a reference, and a bilateral economic zone generating demand that is already measurable before the first train runs.
Why this matters for the city being built around the station
Six new malls are planned in Johor Bahru from 2026 onward, several positioned directly within the RTS Link catchment area. The Bukit Chagar Integrated Development alone — a RM 2.6 billion project by MRT Corporation and Sunway Group built directly at the station — is designed to serve hundreds of thousands of commuters per day at full system capacity.
That development is not being built for 40,000 daily passengers. The developers and their financial models know something the headline figures do not say clearly: the 40,000 is a starting point, not an endpoint.
Every business, every property, every piece of hospitality infrastructure being positioned near Bukit Chagar today is making the same calculation. They are pricing in not the train that opens in 2027, but the train system that reaches maturity in 2035 or 2040 — the one that, if Japan's model holds, could be moving numbers that make the Causeway's current 300,000 daily crossings look like a single chapter in a much longer story.
The train is arriving soon. The real question is not how many people it carries on day one.
It is how many people this city will be ready to serve when the train finally runs at what it was built to do.
johor.world covers Johor Bahru's transformation through independent, in-depth analysis.
