It's a paragraph in the RTA's Road Users' Handbook: "When overtaking give bicycle riders a safe amount of space. This means at least one metre to the side in a 50 kmh zone; if the speed limit is higher, then bicycle riders need more space for their safety."
Of course that one metre is precious for cyclists, and there'd be many still alive if it were granted. It is also important for drivers, not many of whom would find hitting a cyclist anything less than traumatic.
As a cyclist I can assure non-riders that the one metre is often breached, and sometimes these drivers come within centimetres of the rider. The likely effect of clipping the right edge of a cyclist's handlebars or the cyclist's elbow is to throw the front wheel violently to the left and to throw the cyclist into the vehicle or, in the case of trucks, under the vehicle.
Distances and placement of bicycle and truck were an issue in the trial that ended in the conviction late last week of a truck driver charged with dangerous driving causing the death of the young lawyer Dominic Mason at Blacksmiths in December 2007. The driver's lawyer argued that Mr Mason's elbow was in the truck's lane when the elbow was hit, and the jury either did not accept this or saw it as irrelevant.
A minimum one metre margin will go a long way to ruling out such argument. But this one metre is no stronger than a sentence in a handbook. The RTA doesn't appear to be in any doubt that this margin is required for the safety of cyclists, so why is the margin not given the authority of law?
Two other issues impinge on this problem of separation. One is, as I found climbing on the Bells Line of Road to Katoomba a week ago, that the trailer of articulated trucks moves significantly into the corner and dangerously closer to the cyclist on bends. The other is my belief that some drivers, P platers and women primarily, are often unaware that they have driven dangerously close to a cyclist. To overcome the first I believe it would be reasonable to close to either cyclists or articulated trucks winding roads that do not offer a generous shoulder. And for the second, new drivers (and women!) should be required to demonstrate in a driving test that they can gauge a gap of a metre. What do you say?
And do you see the minimum one metre as too much? Too little?