NSW Category 3 school bus: 29 to 43 seats

NSW · Category 3

NSW Category 3 school bus: 29 to 43 seats

Category 3 sits between the small bus and the full-size school bus: 29 to 43 authorised adult seats, excluding the driver. It keeps the twenty-five year maximum age of Category 4 while carrying a Category 2 kind of body, and like Category 2 it has no published vehicle specification of its own.

Where this comes from. TfNSW publishes nine BP4 vehicle specifications, and only two of them are school buses — both Category 4. There is no Category 3 equivalent. What follows is drawn from the Rural and Regional Bus Service Contract, the NSW technical specifications and the Australian Design Rules, each one cited. For the contract terms themselves, use the documents and forms page below or ask your contract manager.

What Category 3 covers

Requirement	What it says	Source
Definition	29 to 43 authorised adult seats, excluding the driver. The categories are set by seat count in the Bus Category table, not by length.	RRBSC cl. 1.1
How a new bus is categorised	TfNSW determines the category, weighing actual patronage and projected peak passenger numbers against the seating table, with maximum passenger load measured under reg. 94 of the Passenger Transport Regulation 2007 (NSW).	RRBSC cl. 5.4(m)
Maximum age	A contract bus must be replaced when it reaches the maximum age set in Paragraph 2 of the Contract Buses and Contract Depots Schedule, counted from the purchase date. Categories 1 and 2 run to 15 years; Categories 3 and 4 run to 25. At that point the bus comes off the contract and is replaced through the TfNSW Bus Procurement Panel.	RRBSC cl. 13.2(a)(i)
Depreciation	Depreciation under the contract is a separate clock from maximum age, and the two do not line up. Categories 1 and 2 depreciate at 7.69% a year, which writes the bus down over thirteen years against a fifteen year maximum age. Categories 3 and 4 depreciate at 5.00% a year, twenty years against a twenty-five year maximum age. So a contract bus is fully written down well before it has to come off the contract, which is what matters when you are working out a Vehicle Termination Payment.	RRBSC Payment Schedule para. 4.6
Why there is no BP4 specification	Of the nine BP4 vehicle specifications TfNSW publishes, two are school buses and both are Category 4 — the diesel (D) and the zero emission (J). Categories 1, 2 and 3 have none. The requirements come from the ADRs, the NSW technical specifications and the operator’s own contract instead.

School bus signage and lights

Requirement	What it says	Source
Which buses	Any bus seating more than 12 people including the driver that carries school children to or from school on weekdays between 7.00–9.30 am or 2.30–5.00 pm, or is used solely for that purpose.	TS142/TS150 factsheet
TS150	The specification for new buses — larger, higher-contrast warning signage, brighter flashing wigwag lights, and a rule that signs must not be concealed or distorted in any way. Applies to buses first registered from 8 February 2019.	TS142/TS150 factsheet
TS142	The existing-fleet specification, in force from the same date. Complying with TS150 is deemed to satisfy TS142.	TS142/TS150 factsheet
The 100 mm boundary	Both specifications require a 100 mm boundary beneath the “WHEN LIGHTS FLASH” and “40 km/h” signs, carrying no advertising text or images. Anything above that boundary, a vinyl wrap included, must be monochrome or fully transparent.	TS142/TS150 factsheet
Showing compliance	Rural and regional operators give their contract manager a warranty on a pro forma with the installation invoice. Metro and outer metro operators demonstrate it at their first HVIS inspection.	TS142/TS150 factsheet

End of shift child check

Requirement	What it says	Source
The duty	At the end of a shift the driver must check the bus. TfNSW puts it plainly: “Drivers do have a responsibility to ensure all students have safely exited the bus before end of shift.” Operators generally meet this with a child check system that sounds an alarm when the ignition is switched off and is only silenced by a button at the back of the bus, so the driver has to walk the aisle. We have not found a TfNSW document that mandates a particular device, so treat the duty as the requirement and the device as the usual way of discharging it.	TfNSW school bus FAQs
Doors before moving	Drivers must make sure the doors are closed before the bus moves. The FAQs point to the Passenger Transport (General) Regulation 2017 for the detail.	TfNSW school bus FAQs

Door safety

Requirement	What it says	Source
TS160	Applies to buses seating more than 12 people including the driver from 1 January 2023. A bus meeting TS160 also meets TS146 and TS155. A label must be fitted.	Technical specifications application table
Earlier specifications	TS146 (from 1 August 1997) and TS155 (buses over 25 persons, from 1 July 2018) remain applicable to the buses originally required to meet them. Neither is retrospective.	Technical specifications application table

Doors, mirrors and interior

Requirement	What it says	Source
TS147	Field of view of the passenger entrance doors of a bus.	NSW vehicle standards
TS148	Padding for seat backs, handrails and partitions on buses.	NSW vehicle standards

Seatbelts and restraints

Requirement	What it says	Source
Seatbelted seats	ADR 68/00 governs seatbelted seating in an omnibus, as it does for Category 4.	ADR 68/00
Child restraints	ADR 68/00 cl. 5.6 and ADR 34/03 cover child restraint anchorage fittings.	ADR 68/00, ADR 34/03

All four categories

A bus category in New South Wales is a seat count, not a length. These are the bands from the Bus Category table at clause 1.1 of the Rural and Regional Bus Service Contract, which reads the same in the Small and Medium contracts.

Category	Adult seats, excl. driver	Maximum age	Depreciation	Ours in that band
Category 1	8 to 14	15 years	7.69% p.a.	—
Category 2	15 to 28	15 years	7.69% p.a.	ZBus L7 Diesel, 18 to 26
Category 3	29 to 43	25 years	5.00% p.a.	ZBus L8 Hybrid, 29
Category 4	44 and above	25 years	5.00% p.a.	ZBus H12 Diesel and H12 Hybrid, 57

TfNSW publishes nine BP4 vehicle specifications — Two Door City Bus Diesel (A), One Door Urban Diesel Bus (B), Category 4 Diesel School Bus (D), 14.5 metre Diesel Bus (E), Double Deck Diesel Bus (F), Category 4 Zero Emission School Bus (J), 14.5 metre Zero Emission Bus (K), Double Deck Zero Emission Bus (L), Articulated Deck Zero Emission Bus (M). Two are school buses and both are Category 4. Categories 1, 2 and 3 have no published vehicle specification at all.

Maximum age runs from the purchase date and is set in Paragraph 2 of the Contract Buses and Contract Depots Schedule. Depreciation is a different clock: at 7.69% a bus is written down over thirteen years against a fifteen year maximum age, and at 5.00% over twenty against twenty-five. Check both against your own contract. Seat counts are ours, from the specification sheets, and TfNSW determines the category for a new bus on patronage rather than on the brochure.

Where ZBus stands

We are not on Bus Procurement Panel 4.

Admission to the panel is a separate process and we have not been through it, so we cannot supply a bus under the Deed of Standing Offer today. We would rather say that here than have you find out after a phone call.

What our L8 Hybrid does meet

29 seats, at the bottom of the 29 to 43 band that defines Category 3
Body length 8.50 m
Plug-in hybrid: CATL 88.87 kWh with a YUCHAI 2.6 litre generating set
Seatbelted throughout

What we have not assessed against this category

TS150 signage and lights as fitted
TS160 door safety
TS147 field of view and TS148 padding
Seat count and belt configuration against a particular contract’s requirement

If you are replacing a bus under this category, ring 0477 957 513 or email sales@zbus.com.au and we will tell you straight whether we can help. If we are not the right answer, we will say so.

The source documents

Diesel Euro 6 — Category 4 School Bus, BP#4 specification v4.8 (15 March 2024)
TS142 / TS150 new bus technical specifications factsheet
Technical specifications application table (TS146, TS155, TS160)
Rural & Regional Bus Service Contract (Medium), March 2022 — the Bus Category table is at clause 1.1
NSW vehicle standards: technical specifications for buses
TfNSW school bus FAQs for parents, carers and students
TfNSW Bus Procurement Panel
TfNSW documents and forms for bus operators

Written 21 October 2026 from the documents linked above. TfNSW revises these; check the current version before you rely on it, and treat your contract manager as the authority rather than this page.

NSW · Category 2