It's just reached the mainstream media (after almost 3 months ): Melbourne's Herald Sun (aka Feral Hun, due to its anti-cyclist stance and generally tabloid style aimed at bogans) article. This is the discussion thread that's been running since the tacks first appeared: https://www.bicyclenetwork.com.au/forums/viewtopic.php?f=5&t=26910 In late February, one of the Australian cycling forums reported that a large number of tacks had been strewn along the parking lane (which generally also serves as a cycling lane, although it's not mandatory for cyclists to use) in Yarra Boulevard, a scenic road winding its way through Yarra Bend Park in the suburb of Kew, inner Melbourne. I then decided to stop using this road as part of my commute, even though I did enjoy riding along it, because I didn't want to be replacing tubes at least once per week. I've found an alternative route which is pleasant enough and avoids the worst of the main roads. Three months later, the tacks are still being thrown onto this road, along with triangular shards of metal or glass! Whoever's doing it has a serious grudge against cyclists. There are the occasional groups of cyclists who ride along this road in the early morning on weekends who apparently can get a bit noisy when chatting amongst themselves, but it certainly doesn't justify putting tacks on the road. This has already caused at least one cyclist to crash, after his front tube suddenly deflated and he lost control. Apparently, a few motorcyclists have had flats caused by the tacks, and there was a report on the cycling fora of a motorist with a flat tyre also. Do you get anything like this in the UK?