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SUPERSEDED NEGOTIATED - OPW25 0042 - REFERENCE DOCUMENT (As Published)
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Figure 2.2: Speed to be used for advance warning sign spacing Table 3.2: Placement of termination signs
Table 5.7: Recommended taper length
Speed (km/h) Distance (m) Recommended taper length (m)
Speed (km/h)
110 80 60 40 < 55 15 < 45
Traffic control taper
15
Lateral shift taper
5
Merge taper
15
56 - 65 45 46 - 55 15 15 30
> 66 Equal to the speed (km/h) 56 - 65 30 30 60
66 - 75* N/A 70 115
Table 4.3: Estimated queue length 76 - 85* N/A 80 130
86 - 95* N/A 90 145
Multiplier
Maximum stopping time 96 - 105* N/A 100 160
(minutes)
Ma (multiplier for average vehicles)
Mo (Multiplier for oversized ≥>106*
106* N/A 110 180
vehicles)
2 2.4 8 * Taper lengths are based on a:
5 6 20 3.5 m width of the lane to be closed
lateral shift taper length equal to 1.0 m/s lateral shift
200 m 200 m 200 m 10 12 40 merge taper length equal to 0.6 m/s lateral shift
Table 2.2: Sign Spacing 15 18 60 median speed for each range. For example, speed range 76 - 85 has a median speed of 80 km/h
30* 36 120
Speed (km/h)* Distance (m) Table 5.8: Distance between tapers
< 55 15 * A 30 minute stop time is unusual but has been included for some circumstances.
Speed (km/h) Distance (m)
46 - 55 45
Table 4.1: Edge clearance ≤ 45 10
> 66 Equal to the speed (km/h)
46 - 55 25
Speed (km/h) Distance (m)
56 - 65 70
Table 2.3: Recommended sight distance to a traffic control device For post-mounted reflectors, temporary hazard markers > 65 1.5 times the speed (km/h)
Speed (km/h) Distance (m) All speeds 1
< 45 For traffic cones, bollards, longitudinal channelising barricades or any other delineation device Table 6.1: Delineation adjacent to excavations
50
< 65 0.3*
46 - 55 70 Protection required
> 66 0.5
56 - 65 90 Speed (km/h) Traffic volume Clearance to
Depth of excavation (mm)
(vpd)* excavation (m)
> 66 Two times the speed (km/h) Table 4.2: Spacing of traffic cones, bollards and post-mounted delineators
50 to 250 251 to 500 >500
Figure 2.3 is an example of sign placement when considering sign visibility and recommended sight Recommended maximum
Purpose and usage Speed (km/h) < 2.5 Option 1 Option 2 Option 3
distance. The arrow represents the sight distance required for a road user to perceive and react to the spacing (m)
message bring communicated by the sign ahead for a speed of 60 km/h. In this case, parking has been < 65 Any 2.5 - 5 Option 1 Option 1 Option 2
For traffic cones and bollards**
restricted for a portion of the roadside to ensure that sight distance to the sign is maintained
All purposes < 55 4 >5 Option 1 Option 1 Option 1
Figure 2.3: Appropriate sight distance 56 - 65 12 <5 Option 1 Option 2 Option 3
< 1500
Appropriate sight distance = 90 m = 60km > 76 18 >5 Option 1 Option 1 Option 1
> 70
Protecting freshly painted lines 56 - 75 24 <6 Option 1 Option 2 Option 3
> 76 > 1500
60 >6 Option 1 Option 1 Option 1
Footpath S S For post-mounted delineators
* For multilane roads use volume in one direction. For two-lane, two-way roads use the sum of both directions. Any
All purposes < 75 24
Shoulder variations to the recommendations in this table need to be supported by a risk assessment.
> 76
40
60
** For Options 1 and 2, cones or bollards are to be place at the top of the excavation.
*Use the speed limit where the cones and bollards are installed.
**Consider whether cyclists are using the road shoulder or bike lane and whether an appropriate alternative facility be
provided before installing traffic cones or bollards in the area. Where possible, place bollards to maintain a safe cycling Table 5.1: Road Safety Barrier System Clearance
facility.
Speed (km/h) Distance (m)*
Note: This is an example for a 60 km/h scenario. Table 5.4: Maximum length of operation under shuttle flow < 40 0.3
41 - 60 0.5
Table 2.5: Minimum lane width Traffic volume in both directions (vph) Distance (m)
61 - 80 0.5
Residential street 60
Cirteria Lane width (m)* > 80 1
701 - 800 70
General La ne widths 601 - 700 100 * Clearance is measured in front of the barrier system and not behind the barrier system in the deflection zone.
≤60 km/h Minimum 3.0* 501 - 600 150
70, 80 or 90 km/h Minimum 3.2* 401 - 500 250 Tolerances Table (m)
≥100 km/h Minimum 3.4* 351 - 400 400 -10% +25%
Distance -10% +25% Distance -10% +25% Distance
Curve with radius 100 – 250 m Add curve widening of 0.5 m per lane 301 - 350 600
< 300 800 10 9 13 70 63 87 130 117 163
In addition to the curve widening of 0.5 m per lane,
Curve with radius < 100 m consider the swept path of long vehicles (for example, 15 80 100
buses, trams)
13 19 72 140 126 175
Table 5.5: Length of temporary speed zone
Two-way residential street Minimum of 5.5 (sum both ways) 25 22 31 90 81 113 150 135 187
Temporary
Shuttle flo w operation speed limit Length of zone (m) Conditions 90
(km/h)
30 27 38 100 125 160 144 200
Shuttle flow with active control (by traffic controllers or
Minimum 3.0*
PTCDs) high level of hazard for workers on foot. 45 40 56 105 95 130 180 162 225
< 40 100 - 200 it is impractical to separate pedestrians or cyclist from vehicular traffic
Shuttle flow, without active control on residential
Minimum 3.0* and Maximum 3.5 to ensure vehicles 50 45 99 180 250
streets, includes no control or the use of GIVE WAY
take turns using a single lane
in the work area 62 110 137 200
and ONE WAY signs (see Section 5.4.4). 100 (minimum) - workers on foot within 1.2 m of traffic with no physical barrier
40
*Temporary minimum lane widths are not to be greater than existing lane widths. This minimum temporary lane width
500 (maximum) structural danger to bridges
60 54 75 120 108 150 300 270 375
does not apply to curves of radius 250 m or less, or locations where there are fixed vertical obstructions such as fences workers on foot or small plant within 3 m of traffic with no physical
or safety barriers within 30 cm of the edge of the lane on one or both sides. Where these conditions apply, consider barrier (i.e road safety barrier)
Approved head /
widths wider than those listed previously to accommodate large vehicles. The speed to be used when considering lane on approach to the traffic controller of PTCD
High Vis Clothing Use gloves when
width requirements is the speed limit (permanent or reduced) which is applicable to that length of road. reduced visibility (e.g. dust or smoke) sun protection
Consideration shall also be given to cyclists and pedestrians (see Sections 3.10, 4.10 and 5.13 for further details on 60 150 (minimum) to be worn manual handling
reduced standard alignment required
traffic management regarding pedestrians and cyclists).
Where there is a change in speed limit, the minimum lane width requirements may also change with lane widths based degraded pavement surface
on the applicable speed limit at that location. Changes to lane widths will apply at the change in speed limit, with the Safety glasses No jewelry
newly laid bituminous seal. Lase up safety
transition to the new lane width commencing at the speed limit change location. The transition to the new lane width to be worn as permitted on
shall occur at a rate which matches the transition rate for a lateral shift (see Table 5.7) of the same distance (the lane
80
workers on foot or small plant within 3 -6 m of traffic with no physical barrier
per site boots to be worn
width change) in the same location (note the 200 m value applies to taper lengths): for example, for a 500 (maximum) electrical sites
disturbance to alignment or pavement surface
lane width reduction of 0.4 m, as the lateral shift values are based on a full 3.5 m shift, the equivalent recommended requirements
lateral shift distance would be divided by approximately 8.7 (3.5 / 0.4) to establish the taper length required for the for advance warning of a 40 or 60 km/h when speed is 100 km/h or
Document
0.4Set ID: 24005451
23806881 80 (buffer) 300 (maximum)
m transition in lane widths. more. Template Version 14 04/09/2024 to Be Reviewed By 04/09/2025
Version: 1,
0, Version Date: 06/08/2025
01/01/1900
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