Part C: Technical Guidelines - Emergency Stopping Bays

Document No:  D10#80939
 
Revision:  2E
 
Date amended:  26-Apr-2016
The information below is intended to reflect the preferred practice of Main Roads Western Australia ("Main Roads"). Main Roads reserves the right to update this information at any time without notice. If you have any questions or comments please contact Ron Koorengevel by e-mail or on (08) 9323 4704.

To the extent permitted by law, Main Roads, its employees, agents, authors and contributors are not liable for any loss resulting from any action taken or reliance made by you on the information herein displayed.

Revision Register

​Ed/Version
Number
​Clause
Number
​Description of
Revision
​Date
​1 All ​Guideline Developed ​28-Jun-2007
​1A ​2.4 ​Drawing 9220-0160 amended ​06-Sep-2007
​1B ​1.3 ​Relinked to Updated Specification 702 ​27-Sep-2007
​2 ​All ​Guideline reviewed and revised ​09-Jun-2010
​2A ​Header ​Contact person changed ​29-Sep-2011
​2B ​2.4 ​Drawing 9220-0160 amended ​10-Feb-2012
​2C ​1.3, 2.1, 2.2, 2.3 ​Changed wording of "Emergency Telephones" to "Roadside Help Phones", Changed picture in 2.3 to current signing layout for Emergency Stopping Bays ​16-July-2013
​2D ​2.3 ​Signs MR-SAD-10 and MR-RPK-19 in Figure 1 updated. ​25-Mar-2014
​2E​2.4​Drawing 200731-0005 amended.​26-Apr-2016
 

Table of Content


1. GENERAL

1.1 Introduction

 

Emergency stopping bays provide a safe pull-off area for broken down vehicles and provide safe access to emergency telephones. This document provides technical guidelines for the provision of emergency stopping bays along freeways or planned freeways.

 

The provision of emergency stopping bays may be viewed as an enhancement to the provision of emergency telephones only. This guideline should therefore be read in conjunction with the guidelines for the Design and Installation of Roadside Help Phones.

1.2 Scope

This document provides supplementary information over and above that provided for the design and installation of emergency telephones; specifically to make provision for the design of emergency stopping bays. A link is also provided to the Main Roads specification for the Supply and Installation of Emergency Telephones.

 

1.3 References

    • Main Roads Guideline: "Design and Installation of Roadside Help Phones", Document No. 67-08-6.
    • NAASRA Guide - Policy on the Use and Installation of Emergency Telephones on Freeways and Roads of Limited Access (1980).
    • Main Roads - Specification 702 - Supply and Installation of Emergency Telephones (Covers the Supply, Installation and commissioning requirements).
    • AS1742.2: 2009-Manual of Uniform Traffic Control Devices Part 2: Traffic Control Devices for General Use
    • AS1742.6: 2004-Manual of Uniform Traffic Control Devices Part 6: Tourist and Service Signs
    • AS1743: 2001- Road Signs-Specifications
    • AS1428.2: 1992-Design for access and mobility - Enhanced and additional requirements - Buildings and facilities.
    • Main Roads Disability Access and Inclusion Plan 2007 - 2011

2 DESIGN GUIDELINES

2.1 Location

 

Section 3.2 of the guideline for the Design and Installation of Roadside Help Phones details the procedure to follow to determine a suitable strategy and locations for siting emergency telephones. Since the provision of emergency stopping bays may be considered as an enhancement to the strategy of providing emergency telephones only, these locations may also be considered as suitable for Emergency Stopping Bays on applicable routes, subject to the following additional requirements:

 

    • Entering Sight Distance (ESD) for the exit point (downstream taper) should be provided as a desirable standard for the design speed of the major road. Safe Intersection Sight Distance (SISD) shall be the minimum standard provided.
    • Sites shall not be provided within 100m upstream of the start of an exit ramp or 100m downstream of the end of an entrance ramp.
    • Sites shall not be provided within a freeway merge area or within 100m downstream of the end of a merge area.
    • Sites shall be selected on the left side of the road only.
    • Sites shall be located between street lighting poles.
    • Sites shall have an emergency telephone.
    • Sites shall be within 400 metres and in view of an existing or new CCTV camera.
    • Spacing of bays shall be at least 1 kilometre and no more than 4 kilometres apart, for each direction of travel, except where the sealed shoulder is to be used as a "shoulder run" during peak hours. Under these circumstances, all emergency telephones shall be accommodated at Emergency Stopping Bays. The minimum spacing should be applied wherever possible and wider spacing should only apply in the event of immovable constraints, subject to prior agreement, with the relevant Main Roads' Asset Manager (Metro region) or Planning and Asset Manager (other regions).

 

2.2 Geometric Layout

 

Drawing number 200531-0019 provides a layout plan for emergency stopping bays with or without kerbing. The following requirements should be noted:

 

    • Emergency stopping bays shall be 60m long, inclusive of 10m tapers at either end.
    • Bays should be a desirable width of 6.0 metres (inclusive of sealed shoulder). A minimum width of 5.0 metres (inclusive of sealed shoulder) should only apply in the event of immovable constraints, subject to prior agreement with the relevant Main Roads' Asset Manager (Metro region) or Planning and Asset Manager (other regions).
    • If the road is kerbed, then the stopping bay shall also be kerbed. The designer should ensure that the bay is self-draining with no localised ponding.
    • The emergency phone shall be located along the wider part of the bay, as close as possible to the downstream light pole to enable the handset to be well lit. The minimum level of lighting shall be 10 lux.
    • The size and position of the concrete pad for installing the pillar mounted emergency telephone has been changed from that applicable to a normal emergency telephone installation, in order to minimise the total area required for the total installation. Drawing number 200731-0003 provides foundation and base details for both kerbed and unkerbed installations.

2.3 Signs

In addition to the normal signing required for emergency telephones, additional signing shall be provided at emergency bays to distinguish the bay from an emergency telephone only site. The philosophy adopted here is that additional advance and position signage only shall be provided. Drivers will only be informed of distances (in increments of 500m) to upcoming emergency stopping bays and not of distances to emergency stopping bays already passed, although the normal signage informing drivers of distances to previous emergency telephones will still be provided. The reason for this is to discourage drivers from reversing back to emergency stopping bays already passed. Figure 1 illustrates the proposed signs for emergency stopping bays, including the normal signs for emergency telephones only.

It is important to ensure that the distances shown on the advance signs for emergency telephones (MR-SAD-6) do not conflict with the advance signs for emergency stopping bay and help phone (MR-SAD-10).

 signing layout for emergency stopping bays.GIF

 

Figure 1 : Signing Layout for Emergency Stopping Bays

2.4 Applicable Drawings

 The following Main Roads drawings are applicable to this guideline:

 Drawing Number
Title
Telephone Identification Label
Advance Direction Guide Sign - Emergency Telephones - MR-SAD-6
Emergency Stopping Bay - Layout Plan
Emergency Telephones at Emergency Stopping bays - General Arrangement, Foundation and Base Details
Emergency Stopping Bay & Help Phone Only - MR-RPK-19
200731-0005 Emergency Stopping Bay & Help Phone .... Ahead - MR-SAD-10