Sunshine Islands Bus Simulator route numbers
Two digits mean the run stays inside one zone (first digit is the zone); three digits mean it crosses zones (first two digits are the zones it connects).
Route numbers here are a code, not decoration: two digits stay inside one zone, three digits cross zones, and a letter in front or behind says what kind of service it is.
Service types at a glance
| Service | Live examples |
|---|---|
| Local, inside one zone — two digits | 21, 25, 41–49, 70–77 |
| Inter-zone — three digits | 462, 475, 670, 140, 370 |
| Overnight — N prefix | N146, N171, N472, N476 |
| Sightseeing — S prefix, since 1 January 2025 | S1, S2 |
| University — U prefix | U47 |
| Event, holiday or festival — R prefix or suffix | R370, 171R, N76 |
| Typhoon — Y prefix or suffix | Y370, 25Y |
| Staff shuttle, employees only — C and F prefixes | C01, F701, F702 |
| Special departure — no prefix | 246X extra departures |
| Withdrawn | 41AF, stopped 31 May 2024; 25R |
Before 1 January 2025 an S prefix meant something else — a bad-weather service for when Desire Bridge was closed to buses. The last route using it, 25R, is cancelled and that job now belongs to the Y pattern.
Inner-zone routes: two digits
Inner-zone numbers combine two digits. The first is the zone served; the second is the district or corridor inside it. There are no single-digit routes.
| Prefix | What it covers |
|---|---|
| 2x | Zone 1 routes via Dove Island — 21 circular, 25 to Container's Island |
| 4x | Zone 4 — 41 Norton, 42 Central, 46 Eastmallow, 47 and 48 island links, 49 North Island Hill |
| 7x | Zone 7 — 70 and 72 Senpai, 71 and 77 Alexander, 73 YiYan, 74 cross-links, 75 Rainbow, 76 Leafy Bay |
| 1x, 6x, 8x | None in service — Zone 8 runs are signed as 7x because they do not terminate inside it |
Zones 2, 3 and 5 are open water only, so no route numbers start with 2, 3 or 5 as an inner-zone prefix — those digits appear only in inter-zone numbers.
Inter-zone routes: three digits
Every inter-zone route has three digits. The usual pattern is ABx: A is the zone it leaves from (the smaller number), B is the zone it terminates in. The same number is used in both directions.
| Number | Reading |
|---|---|
| 462 | Zone 4 to Zone 6 |
| 475 | Zone 4 to Zone 7 |
| 670 | Zone 6 to Zone 7 |
| 140 | Zone 1 to Zone 4, via the Western Harbour Tunnel |
| 370 | Zone 1 to Zone 7, via the Central-Western Bridge |
Routes ending in Zone 1 are the exception, because it is reached three ways: 1Bx via the Western Harbour Tunnel, 2Bx tunnel one way and Central-Western Bridge the other, 3Bx over the bridge. The last two digits still hint at the districts served when most stops sit in Zone 4 or 7, which is why 475 and 47 read like relatives.
What the letters change
In front of the number: N overnight, excluding the 24-hour services; R a special route for events, holidays or festivals; S sightseeing since 1 January 2025; U a university service; Y the typhoon diversion used when signal no. 8 or higher is up or Desire Bridge closes; C and F the City Scape Bus and Forever Transit staff shuttles, with the C hidden on CSB destination displays. Airport, border port, expo centre, railway feeder and express prefixes are reserved but unused — there is no airport, and no road out of the Islands.
Behind the number: X express (246X), P peak hours only (141P), R an event extra such as services after a stadium event (171R), Y the typhoon replacement of the base route (25Y), A or B a branch of the same series (49A), and S, which covers whichever of rush hour, late night or event special applies (76S).
Route codes you can type into the tablet
The driver tablet accepts codes that are not printed on the timetable:
| Code | Result |
|---|---|
| M2 | Training display |
| M3 / MTS | Staff shuttle on FT and REBC buses / metro replacement service |
| PH, PH1 | Private hire sign; PH1 only routes properly during a private-hire Daily Challenge |
| Q02 / Q03 / Q04 | CSB training, crew bus and special service displays |
| D | Shows the current date on most vehicles |
| T1 | Road test exposure on FT and REBC buses |
| SH | Recruitment advert on FT and REBC displays |
Enter a code a company has no exposure for and its logo appears instead; suspended codes put the V1 routing on the GPS while announcements and stops stop working. Sunshine Islands Bus vehicles still carry Version 1 exposures for legacy routes, so 141P can display as plain 141.
The best routes to start with
| Goal | Pick | Why it works |
|---|---|---|
| First shift | 42 or 46, Zone 4 locals | Short runs, dense stops, no water crossing |
| Learning the map | 475 | One long read of the network, bridge approach included |
| Fastest Sunshards | Any two-digit route you have never driven | 5 for the first completion, 15 more for the first pro-mode completion |
| Clearing the daily tasks | A long inner-zone run with plenty of stands | The 350-passenger and 30 km targets reward full, well-loaded routes |
Leave N, R, Y and S routes until you know the road.
