Accredited Mass Management Scheme (AMMS)

​About The Scheme

This new scheme was developed in conjunction with the Ministerial Heavy Vehicle Advisory Panel with the purpose of providing:

  • an efficient concessional loading scheme;
  • a network approach;
  • road infrastructure protection and sustainability; and
  • greater flexibility in the type of loading controls used.

AMMS allows for three (3) concessional mass tiers that are available to transport operators that have appropriate loading control methods.

The scheme does not prescribe the specific loading control methods that must be used, therefore any proven loading control method can be used for any type of load. The loading control methods must be in place from the time of permit application and auditable records and documents must be kept to demonstrate compliance from this time.

AMMS replaces the previous Certified Mass Management Scheme (CWMMS) and to assist transport operators in their transition to AMMS, the Certified Weighbridge Mass Management Scheme (CWMMS) has been extended until 30 June 2017. 

To be eligible for AMMS, operators must be accredited under the WA Heavy Vehicle Accreditation Mass Management Module. For more information on the accreditation requirements, please refer to the Accreditation Page.

Application Process

Once a transport operator has the appropriate loading control methods in place, to apply for an AMMS permit they are required to complete the AMMS Application Form, which includes a declaration stating they have appropriate loading control methods in place to ensure compliance with the allowable mass limits of the Scheme.

AMMS Application Form

AMMS Approved Weighbridge Supplier Member List

A supplier with a certified weighbridge used by multiple transport operators may apply to have their weighbridge included on the AMMS Approved Supplier Member List.

For a weighbridge to be approved on the AMMS Supplier Member List it must be able to determine and record both:

1. the gross mass of the vehicle; and

2. individual axle group weights.

This allows a transport operator using an approved weighbridge as their sole loading control method to simply refer to the approved weighbridge when addressing the criteria for the relevant Standard in the Mass Management Module.

To apply the Weighbridge Application Form must be submitted, which includes a declaration stating the weighbridge can determine and record the vehicle's gross mass and load distribution across axle groups. The weighbridge supplier must also provide Main Roads with current certification or calibration documentation with their application form.

Weighbridge Application Form

 AMMS Approved Supplier Member List

More Information

For more information about the scheme, please see the AMMS Fact Sheet and FAQ Sheet below:

 

The following  are provided as examples of Mass Management Systems that may be used by operators as a guide in developing their own Mass Management System.

Whilst these examples provide a comprehensive examples, Operators should consider the context of their business when developing their system, which may or may not need to be as detailed. However, the system must address all standards in the Mass Management Module.

Concessional Networks

​Level 1 ​

Concessional Road Networks​: Vehicle combination must comply with all relevant conditions that apply to the equivalent vehicle combination under the relevant Operating Conditions , unless otherwise exempt by this permit (ie: Mass limits).

​Axle Group​Tonnes

Tandem vehicle combinations operating on Level 1 must only operate on the relevant RAV Network that is permitted for the equivalent vehicle combination under the Prime Mover, Trailer or Truck, Trailer Combinations.

Note: A Category 1 vehicle combination may operate on Network 1 under Level 1 AMMS, provided the gross mass does not exceed 50 tonnes.

Tri-drive vehicle combinations operating on Level 1 must only operate on the relevant Tri-drive Network that is permitted for the equivalent vehicle combination under the Tri-drive Prime Mover, Trailer or  Tri-drive Truck, Trailer Combinations.

​Single Steer​6.0
​Twin Steer11.0 ​Load Sharing
10.0 ​Non Load Sharing
​Tandem axle (dual tyres)​17.0
​Tri-axle (dual tyres)​21.5

 Note:  Single steer axle mass exemptions may be used in conjunction with an AMMS permit.

 

​Level 2 ​
(Road Tables below)

Concessional Road Networks:Vehicle combination must comply with all relevant conditions that apply to the equivalent vehicle combination under the Prime Mover, Trailer / Truck Trailer Combination Operating Conditions , unless otherwise exempt by this permit (ie: Mass limits). ​

​Axle Group​Tonnes
​Single Steer​6.0
​Twin Steer11.0 Load Sharing​
​10.0 Non Load Sharing
​Tandem axle (dual tyres)​17.0
​Tri-axle (dual tyres)​22.5

 Note: Single steer axle mass exemptions may be used in conjunction with an AMMS permit.

 
Level ​ ​ 3
(Road Tables below)

Concessional Road Networks: Vehicle combination must comply with all relevant conditions that apply to the equivalent vehicle combination under the Prime Mover, Trailer / Truck Trailer Combination Operating Conditions, unless otherwise exempt by this permit (ie Mass Limits).

 

​Axle Group​Tonnes ​
​Single Steer​ ​6.0
​Twin Steer​ ​11.0 Load Sharing
​10.0 Non Load Sharing
​Tandem axle (dual tyres)​ ​17.5
​Tri-axle (dual tyres)​ ​23.5

 Note: Single steer axle mass exemptions may be used in conjunction with an AMMS permit.

 

Tandem Drive Network (Road Tables and Vehicle Categories)

 

​Category
​Vehicle Description and Configuration
​Axle Spacing
Table
​Tandem Drive Concessional Network Level 2
Tandem Drive Concessional Network Level 3
 
​2Image: Category 2 Vehicle Combinations.JPG​A

​N2.2 (Road Name Order)

 

N2.2 (LGA Order)

 

 

 

​N2.3 (Road Name Order)

 

N2.3 (LGA Order)

 

 

 

​3Image: Category 3 Tandem Drive Concessional Network Level 2.PNG​A

​N3.2 (Road Name Order)

 

N3.2 (LGA Order)

 

 

​N3.3 (Road Name Order)

 

N3.3 (LGA Order)

 

 

​4Image: Category 4 Tandem Drive Concessional Network Level 2.PNG​A

N4.2​ (Road Name Order)

 

N4.2 (LGA Order)

 

 

 

​N4.3 (Road Name Order)

 

N4.3 (LGA Order)

 

 

 

​5Image: Category 5 Tandem Drive Concessional Network Level 2.PNG​A

​N5.2 (Road Name Order)

 

N5.2 (LGA Order)

 

 

​N5.3 (Road Name Order)

 

N5.3 (LGA Order)

 

 

​6Image: Category 6 Concessional Network Tandem Drive Level 2 & 3.PNG​A

​N6.2 (Road Name Order)

 

N6.2 (LGA Order)

 

 

​N6.3 (Road Name Order)

 

N6.3 (LGA Order)

 

 

7​Image: Category 7 Tandem Drive Concessional Network Level 2 & 3.PNG​A

​N7.2 (Road Name Order)

 

N7.2 (LGA Order)

 

 

N7.3 (Road Name Order)

 

N7.3 (LGA Order)

 

 

9​Image: Category 9 Tandem Drive Concessional Network Level 2 & 3.PNG​A

​N9.2 (Road Name Order)

 

N9.2 (LGA Order)

 

 

N9.3 (Road Name Order)

 

N9.3 (LGA Order)

 

 

10​Image: Category 10 Tandem Drive Concessional Approved Combinations.JPG​A

​N10.2 (Road Name Order)

 

N10.2 (LGA Order)

 

 

​N10.3 (Road Name Order)

 

N10.3 (LGA Order)

 

 

 

 Tri Drive Networks (Road Tables and Vehicle Categories)

 

​Category
​Vehicle Description and Configuration
​Axle Spacing
Table
​Tri Drive Concessional Network Level 2
​Tri Drive Concessional Network Level 3
​1Image: Category 1 Tri Drive Concessional Network Level 2 & 3.PNG​A

​Operates on N2.2 (Road Name Order)

 

Operates on N2.2 (LGA Order)

 

 

Operates on N2.3 (Road Name Order)

 

Operates on N2.3 (LGA Order)

 

 

​2Image: Category 2 Tri Drive Concessional Network Level 2 & 3.PNG​A

​TD2.2 (Road Name Order)

 

TD2.2 (LGA Order)

 

 

​TD2.3 (Road Name Order)

 

TD2.3 (LGA Order)

 

 

​3Image: Category 3 Tri Drive Concessional Network Level 2 & 3.PNG​A

​TD3.2 (Road Name Order)

 

TD3.2 (LGA Order)

 

 

​TD3.3 (Road Name Order)

 

TD3.3 (LGA Order)

 

 

​4Image: TD4.3 36.5m Approved Combinations.JPG​A

TD4.2 (Road Name Order)

 

TD4.2 (LGA Order)

 

 

​TD4.3 (Road Name Order)

 

TD4.3 (LGA Order)

 

 

​5Image: Category 5 Tri Drive Concessional Network Level 2 & 3.PNG​A

​TD5.2 (Road Name Order)

 

TD5.2 (LGA Order)

 

 

​TD5.3 (Road Name Order)

 

TD5.3 (LGA Order)

 

 

 

 

 

 

Modified: 18 Apr 2017