20220162 315 Sister Tree Creek Site Access Sight Lines Letter

                                                  C




                                                                                                   A


                                   Figure 5- Proposed driveway north sight line (A-C) – 310m

            Australian Standard AS2870.1 2004: Off-Street Car Parking section 3.2.4 describes sight
            distance requirements for access driveway exits. For an access driveway fronting an
            80km/hr road to achieve a desirable 5s gap to enter traffic, a sight distance of 111m is
            required, with absolute minimum of 105m acceptable.

            Assessed against this criteria, the location of the proposed residential driveway is able to
            demonstrate a compliant sight distance of 130m to the south east and 310m to the north
            west of sight distance available as per the attached plans. All line of sights provided are a
            minimum of 300mm clear of all trees and vegetation. It is recommended that trees
            overhanging the road in the north west direction be trimmed should they impact clear line
            of sight in the future to maintain visibility.

            Based on this analysis, the sight distances at the proposed access location exceed the
            required sight distance for an 80km/h speed environment with 5 second gap acceptance,
            and therefore the proposed access location is able to provide appropriate visibility for safe
            access.

            Yours faithfully,
            RECOR Pty Ltd

            Prepared by                                        Reviewed By



            Ben Parry                                          Nathan Wagstaff
            Civil Engineer                                     NSW Manager
            BEng (Hons), MIEAust                               BEng (Hons) MIEAust CPEng NER (Civil, Structural) RPEQ




P +61 7 5211 1003          A 37 Mary St, Noosaville Qld 4566         E [email protected]                 recorconsulting.com