russell.bathard wrote:I think your idea of a wiggle for approaching trucks is dangerous and could cause an accident.
Not my experience at all - and that's only over the
past 33 years
I'm guessing that you misunderstand what I mean. Allow me to explain.
First thing with trucks in traffic is to be predictable but also conspicuous. The best sort of conspicuity comes from your road positioning. Ride in your lane, about 1-1.5m from the kerb, wider if the lane is narrow or there is any uncertainty. In the city and suburbs truck-drivers will see you ahead of other vehicles due to their height. They will plan ahead and change lanes early to overtake. Hug the kerb and they will be tempted to cut close - very dangerous for you. Do you advocate getting off the road for every large truck passing you in town? Very slow cycling.
On country roads also keep a road presence. Usually the best guide is to ride approximately where the left-most wheel of a car would travel. Passing traffic can see that a correct overtaking move is required. However large trucks like to maintain speed where they can. If you are too far left and/or there is no oncoming traffic they are often tempted to just drive straight by, especially if you are riding a very predictable track along the white edge line. This was the problem I faced with my mates in 1979 - large trucks cutting us disconcertingly close by. We found out however about the wiggle - we were riding with a strong tail wind and could hear the trucks well in advance, about a kilometre back. If there were no oncoming vehicles, when the truck was about 200m back we found that if we did a bit of a wiggle on the road (just for a second) the truck-driver would completely change lanes and overtake us (ie. overtake as they are
legally required to). Truck is not delayed, we are not threatened. Win/win.
The wiggle should be done when the truck is far enough back to take notice and act, not close where it is a hazard. This is the key, and a rear-view mirror is almost essential. Truckies are professional drivers and do not want to cause any problems or have a collision - they have a job to do. By wiggling, even just veering a bit wider then back in line, at the right time they are made aware that cyclists
may be erratic* and they can then decide to move out to pass safely.
This knowledge is something I have used in managing overtaking traffic, especially but not limited to, heavy trucks. It works with almost all drivers of cars as well. The essential tool to enable this to be done is not some sign the truck/car driver cannot even read, but the rear-view mirror, to correctly judge the traffic approaching, its speed and distance.
So there you have it - the 'user manual' for The Wiggle
TM Use it wisely.
* I'd rather that drivers think I am just that bit erratic (which in reality we are, if a pothole appears or a gust of wind strikes) than that I can follow a rod-straight course at all times. All drivers need to learn to give a correct margin for safety. There is no hard rule here (which is why I am skeptical about the "Metre Matters" campaign) - 10cms is never safe but it all depends on the vehicle speeds and the circumstances.