11Redundant pavement markings#

General#

11.1 Pavement markings which are redundant (or the Contract documents specify their removal) must be removed or masked to leave a clean and undamaged pavement with surface texture, reflectivity characteristics and colour comparable to the adjacent pavement surface.

11.2 After removal of the markings, the condition of the resulting pavement surface must be suitable for bonding of new markings.

11.3 At the completion of the removal process, the redundant markings must not be discernible.

11.4 When removing or masking pavement markings such as arrows, numerals, letters, or other pavement markings, the removal or masking must take the form of a rectangular area or block around such markings. When removing or masking longitudinal and transverse lines such as edge lines, centre lines, lane lines, holding lines, or other lines, the removal or masking must cover a minimum of 200% of the total area of existing lines; i.e. minimum 50% extra coverage on both sides of the existing lines.

11.5 Where existing pavement markings are to be removed and replaced by other pavement markings, the pavement markings must not be removed until adequate provision has been made to complete the installation of the replacement markings. The pavement markings must be removed in a sequence that will not mislead or misdirect road users.

11.6 Blacking out with paint or similar may only be used:

1. a)with the prior approval of the Administrator, and
2. b)as an emergency temporary response (for example, to cover paint spillage or incorrectly applied markings).

11.7 If blacking out with paint is permitted, the paint must have skid resistant properties. The paint must be replaced with a permanent solution as soon as possible (in no case longer than 48 hours after the application of the paint).

11.8Sprayed seal surfaces#

For sprayed seal surfaces, existing pavement markings no longer required must be concealed by a double application of a cutback bitumen and 5 mm crushed aggregate overspray. The application of bitumen and 5 mm aggregate requires a second application of the same treatment, after a light brooming. Unless specified otherwise in Annexure MRTS45.1, this method must not to be used for asphalt surfaces.

For longitudinal line markings, the overspray must be sufficiently wide to cover the entire marking. For other pavement markings the overspray area must be the minimum rectangular area required to cover the existing marking. The overspray must be aligned parallel to the road centreline.

The timing of this treatment must be coordinated with the commissioning of the new works and application of new pavement markings to minimise the impact on road users.

The binder must be a cutback bitumen blend comprising 90% Class 170 bitumen and 10% medium curing cutting oil sprayed at an application rate of 1.0 litre/m².

The cover material must be 5 mm crushed aggregate applied at a rate of 120 m²/m³, and as far as possible, must match the colour of the surrounding pavement surface.

11.13Asphalt pavement#

The Contract documents may specify a method to be used for pavement marking removal. If a method is not specified in Annexure MRTS45.1, the Contractor may select the method in accordance with the requirements of this Clause 11.

Methods that may be used on an asphalt pavement include:

• a) grinding
• b) plane and reseal
• c) sandblasting, and
• d) high-pressure water spraying.

11.15Hazard management#

Where the pavement marking removal method may create a hazard to others (such as high-pressure water spraying or sandblasting) the Contractor must in accordance with the QGTTM and Queensland MUTCD Part 3:

• a) in trafficked areas, erect signs warning approaching traffic of the hazard and the need to close windows during work activities, and
• b) in pedestrian trafficked areas, erect signs warning pedestrians of the hazard during work activities.

11.16Temporary masking of pavement marking#

Black non-reflective masking tape may be used if indicated in Annexure MRTS45.1 for the temporary masking of pavement marking, provided that it is specifically designed for this purpose and has skid resistant properties. Once it is no longer required, the tape must be removed soon as practicable, and in no case more than 48 hours after it is no longer required.

Temporary pavement marking tape and long life material whether of a preformed, extruded, spray or screeded type, must be removed in accordance with the Manufacturer instructions.

Unless specified otherwise in Annexure MRTS45.1, any pavement marking tape that is applied over existing markings as a temporary masking measure must be removed within 6 months of application.