08/0853 - Response to Information Request [As Published] · 142008.853

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AS/NZS 2890.1:2004 32

 

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{see Note 1) ' frontage road

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Sa POPE Lia
Z Li 25 m
SS 7
No permanent Access Driver's position ,
sight obstruction driveway
(see Note 3)
Distance (Y) along frontage road
Frontage road speed m
(Note 4) Access driveways other
km/h than domestic (Note 5) | Domestic property
Desirable | Minimum access (Note 6)
5s gap ssbd
40 55 35 30
§0 69 45 40
60 83 65 55
70 97 85 70
80 111 105 95
90 125 130 u ,; ' ore
se values from
100 139 160 and 3" columns
110 153 190

 

 

 

 

NOTES:

Centre-line or centre of road (undivided road). or right hand edge of right hand through lane (divided
toad).

A check to the left is not required at a divided road where the median is wide enough to shelter a vehicle
leaving the driveway.

Parking on this side of the frontage road may need to be restricted on either side of the driveway so that the
sight distance required by the above table to an approaching vehicle is not obstructed.

This is the posted or general speed limit unless the 85th percentile speed is more than 5 km/h above the
limit in which case the tabulated speed nearest the 85" percentile shall be adopted.

The values in the table apply only to left turn and right turn manoeuvres into two-way roads up to four
lanes wide and one-way streets regardless of width, either for a 5 $ gap. desirable at lower frontage road
speeds, or minimum stopping sight distance based on 2 s reaction time.

Crossing manocuvres (e.g. from an access opposite the steam of a T-junction) over four lanes or more. and
turning manoeuvres into a six lane two-way road would require longer gaps unless there was a median
wide enough to store a vehicle and allow a two stage manoeuvre.

These distances are based on stopping sight distances with reaction time of 1.5 s for traffic approaching
along the frontage road and are applicable to a frontage road speed of up to 80 km/h only. Wherever
practicable sight distance provided at domestic property accesses should meet the values given in the
second or third columns of the Table.

When checking sight distance the driver's eye height and the height of the object (approaching vehicle) are
to be taken as 1.15 m above the road surface.

FIGURE 3.2 SIGHT DISTANCE REQUIREMENTS AT ACCESS DRIVEWAYS

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