4.14Vehicle mounted signs and devices#
4.14.1Vehicle mounted warning device#
Replace entire Clause 4.14.1 with the following:
A vehicle mounted warning device shall consist of one of the following arrangements in Table 4.14.1.
| Arrangement | Vehicle Mounted Warning Device (VMWD) | Use conditions / requirements |
|---|---|---|
| 1 | A single flashing yellow lamp or LED light assembly | • For emergency or other infrequent use on a vehicle not normally used for either roadworks or inspection purposes. • For use on a plant item working within a static work area. |
| 2 | A pair of flashing yellow lamps or LED light assemblies (placed as far apart as practical) | • For use on vehicles on all roads without the protection of a static roadworks site. • Positioned on the vehicle so that at least one, and preferably both lamps are visible to all road users from any direction. • Additional flashing yellow lamp(s) or LED assemblies may be required to be added on the vehicle to ensure visibility is provided to all road users in any direction. |
| 3 | An illuminated flashing arrow sign (see MUTCD Part 3 Clause 4.14.2) | • For any situation where option 1 or 2 is not appropriate. • May be used for any type of work (including mobile works). • May be used in combination with options 1 or 2. • If required, supplementary signs (static or variable message signs) are mounted in conjunction or elsewhere in a prominent position on the vehicle. • The illuminated flashing arrow sign must be capable of being removed from view (e.g. covering, folding down, or turning off) when not needed. |
The vehicle-mounted warning device shall be mounted as high as practicable on the vehicle for best visibility to other traffic, e.g. on top of the cab of a truck. It may need to be placed near the rear of the vehicle if a cab-mounted sign could be obscured by a load. Supplementary signs used in conjunction with the illuminated flashing arrow sign (see Clause 4.14.3), may be mounted either in conjunction with that sign or elsewhere in a prominent position on the vehicle. Where signs are mounted on the device or elsewhere on a vehicle, they shall be capable of being removed from view (e.g. by covering, folding, or turning off) when not needed.
If not specified elsewhere, the minimum sight distance from approaching road users to the vehicle mounted warning device shall be:
- 150 m if the speed is 60 km/h or less
- 250 m if the speed is more than 60 km/h.
While the requirements in this document apply once published Transport and Main Roads recognises that making immediate changes to flashing lamps on inspection vehicles may require a greater lead in time to ensure compliance.
In recognition of this, inspection vehicles (other than those used for emergency or other infrequent use) shall comply with the requirements in item (b) by the 31 July 2027.
