What do you mean by "filter"?

jachee · on Sept 23, 2019

I believe they mean riding a motorcycle in the gap between two lanes of traffic, thus "filtering" through the static traffic to the front.

reaperducer · on Sept 23, 2019

It's worth noting that this is legal in some places. Not everyone on HN may be aware of that. I know I was surprised when I first saw it.

ludston · on Sept 23, 2019

It's legal in NSW Australia so long as traffic is not moving.

hnick · on Sept 24, 2019

It's legal in traffic moving up to 30 km/h (including the rider) actually.

https://roadsafety.transport.nsw.gov.au/stayingsafe/motorcyc...

cmroanirgo · on Sept 23, 2019

The long name is "lane filtering".

I've seen an increase of motorcycle cops lane filtering at traffic lights, looking into the laps of the drivers. If there's a phone there, they're booked.