Is Amber the new Green, what’s happening at our traffic signals and do we really care?Andrew McDougall (GAF Traffic)

Survey locations

Data categories

•Amber (immediate)•Amber (delayed)•Red

Road Traffic Code 2000Stopping for circular yellow signal

1) When the yellow light is illuminated, the driver shall not proceed beyond the stop line, unless the driver is so close to the stop line that it is unsafe to do so.

2) If the driver cannot stop in accordance with the above, the driver shall stop before entering the intersection, if safe to do so.

3) If the driver cannot adhere to the above two, then the driver shall leave the intersection as soon as it is safe to do so.

Statistical relevance

Influential factors

1. Traffic volumes

2. Fully signalised / partially or filtered

3. Congestion level

4. Layout type

Intersection control

Signal Signal/Filter

Filter Split

Crash cost comparison

Category  Human Capital 

Willingness to Pay 

Percentage Change 

Property Damage 

$9,136  $11,330  +24% 

Medical  $34,743  $74,991  +116% 

Hospital  $594,505  $292,766  -51% 

Fatal  $2,623,467  $6,898,492  +163% 

*Excerpt from Table 14 of Reported Road Crashes in Western Australia 2012

Do Nothing?

What can be done?

•Enforcement•Education•Engineering

Enforcement

Education

Engineering

Combined approach

Enforcement

EngineeringEducation

Results

Manning Road / W

elwyn

Avenue

Angelo Street /

Coode Street

Labouch

ere Road / South Terra

ce

Mill Point R

oad / Douglas A

venue

Berwick

Street /

George Stre

et / M

cMilla

n Street

Canning Highway / Berw

ick Stre

et

Canning Highway / W

ay Road

Manning Road / La

wson Stre

et

Manning Road / Centenary

Avenue

0%10%20%30%40%50%60%70%80%90%

100% 32 28 38 40 47 101 49 84 102

Percentage of Amber and Red Light Runners

General Amber (Immediate) Amber (Delayed) Red

Thank you

Andrew McDougallGAF Trafficwww.gaftraffic.com.auamcdougall@gaftraffic.com.au