I do live near there - but I didn't see the incident this morning. When I drive in the Perry Vale North 20mph zone (and all the other 20mph residential zones) I do keep my speed within the limit of 20mph. I hope everyone else does too. Sometimes this seems to cause some inconvenience to other drivers behind me.

But it's difficult to find measures that will force all drivers to observe the limits, without a permanent Police presence on every road (for which the officers involved would expect to get paid), or physical measures like barriers that would cause great inconvenience to residents. Suggestions most welcome!