What difference does reducing the speed limit from 60 km/h to 40 km/h make?

The relationship between reduced speed limits and a corresponding reduction in accidents is well documented. Research shows that reducing speed is likely to bring about a reduction in ‘average travel speed’ which has a positive impact on both the number and severity of traffic related accidents.

The safety benefits to reducing the speed limit in an urban area with high activity by 20 km/h is evidenced in the graph below demonstrating a 50% reduction in the risk of death to a pedestrian across a variety of studies with the proposed reduction.

Source: Monash University Accident Research Centre, The Impact of Lowered Speed Limits In Urban and Metropolitan Areas. Jan 2008

Other benefits that have been realised are reductions in emissions, increased efficiency around vehicle and fuel use and reduced traffic noise.

Flow on effects for the area between Central Avenue and Crawford Road, Inglewood may see greater vibrancy, business activity and improved amenity by providing a more pedestrian friendly environment. 

Will this change or divert traffic to side streets?

The widths and general nature of the abutting local access roads should not promote above normal diversions of traffic onto local streets. There are existing local area traffic management measures in place in order to reduce the likelihood of above normal traffic flows on the nearby local streets.

How is this proposal going to affect the operation of the bus lanes and general traffic flow?

The nature of the high transit use buses in Beaufort St already generally aligns with the 40 km/h speed so it is anticipated that there will be minimal impact.

I live in one of the adjacent local streets off Beaufort Street. Will this cause me any traffic issues?

The City will be actively monitoring Beaufort Street and the affected precinct via traffic collection surveys before and after the proposed project in order to assure that traffic patterns and speed are within an acceptable range.

Are the variable speed zone signs enforceable?

Yes. The WA Police enforce these speed zones.

I heard light rail was being considered in the future along Beaufort Street. Shouldn’t we wait for light rail before changing to a variable 40 km/h speed zone?

The planning aspirations for light rail or a high transit transport system is long term. The relative benefits medium term for improved safety from the reduced speed limit outweigh delaying this project.

Why not have uniform 40 km/h zones all the way along Highgate, Mt Lawley and Inglewood?

Beaufort Street differs in terms of the type of activity visitors are undertaking, business types and density and in terms of people moving through the areas.

Some areas, for example near Perth College, have an existing 40 km/h school zone in place. The area between First Avenue and Central Avenue has a different level of activity to say Central Avenue - Crawford Road.

Are any other infrastructure changes being considered other than the LED speed limit flashing signs?

Not at this stage. Other low cost measures could be considered after installing the 40 km/h variable speed zone signs if warranted.