4895_RAL20-0020Response

RAL20/0020 Reconfiguration of a Lot: Response to Information Request – Report              13


    •   Take up existing wearing course and base course to a minimum of 150mm depth plus
        profile as required to provide 3% fall for a 5m distance away from the road shoulder –
        this will reduce quantity of runoff flowing onto the main road during rain;
    •   Install subsurface drainage from the toe of embankment to the other end of the
        crossover;
    •   Widen the ramp formation in the direction of the boundary to 4.0m to allow vehicles a
        wider berth from the top of embankment, while complying with RS-056 Driveways –
        Rural Driveways.
    •   Reinstate a 150mm thick basecourse of compacted Type 2.1 gravel
    •   Profile ramp access as required to conform with Typical Driveway Section – Road in
        Cut as shown on RS-056 Driveways – Rural Driveways.
    •   Reinstate a 150mm thick basecourse of compacted Type 2.1 gravel in accordance
        with minimum formation requirements and provide a 2-coat bitumen seal for full extent
        of crossover and access ramp up to the property boundary of Lot 49 per RS-056
        Driveways – Rural Driveways
    •   Install an edge barrier along the top of embankment and guideposts at either side of
        the bottom of ramp for night visibility.
    •   Provide for a wider radius for ramp approach to road shoulder:
            o Presently the ramp alignment is oblique to the road edge rather than meeting
                 it perpendicular.
            o This increases the likelihood of a driver turning left having to cross into the
                 inbound lane to do so.
            o This can be improved by increasing the area of the shared crossover zone
                 adjacent to the shoulder and adjusting the alignment away from road, to allow
                 a wider turn before it meets the shoulder.
            o Refer to the preliminary driveway design, Control Line 2.
It is also recommended that traffic advisory warning signage is installed ahead of the curved
section of the inbound lane (approximately opposite the existing access to Lot 429). This will
alert drivers also to driveways which have insufficient sight distance on the opposite, East
side of the road. The following advisory signage is required:




                  •   TC-1209B




              •   W8-17-2B (300m)




                                                                               Long View
                                                                              Consulting Engineers