@Joshi
(In case it isn't obvious, the following applies to Australia, where we drive on the left.)
I've done hundreds of thousands of clicks on country roads, and the right-turn signal has NEVER meant that it is 'safe to pass'. Never.
Most indicator stalks allow drivers to apply pressure and thus activate a turn signal's bulb, without "locking on" the relay.
This allows drivers to manually produce two or three pairs of LEFT flashes of the LEFT indicator. Like, L-L (1 sec pause) L-L (1 sec pause) L-L.
That has always been understood that the driver in front is saying, to the following driver, "I know you're there. I'm not turning off, but if you want to pass, it's clear ahead, and I'll be looking out for you."
The right-turn signal has ALWAYS ONLY meant, "Danger. Do NOT overtake me."
More than a few times, I've been in trucks with several tonnes of explosives and an impatient passenger coach, or cara-bloody-van, starts showing too much of their grill in the right hand mirror.
Giving them the L-L pattern has let them know it is clear to pass, but the right-turn signal coming on has ALWAYS meant, "Nup. No way. Don't be a bloody fool. Cool ya jets."
Joshi@aussie.zone 5 weeks ago
I have also driven extensively through mainly country WA and elsewhere and briefly worked as a truck driver in the NT, in my experience there is no consistency in understanding of these signals, as pointed out by the article, and I’m sceptical that it is consistently applied by truckies. Even if it were applied consistently it would still be dangerous.
As a car driver I have on at least 2 occasions had a truckie indicate it is safe for me to overtake in a situation that would have caused an accident. The only time it is safe to overtake is when you as the driver can be satisfied it is safe to do so. Relying on potentially ambiguous signals that are not universally understood is a literal accident waiting to happen.
You make a good point that for the truckies safety there is a need to indicate that it is unsafe but if people are misunderstanding this then I don’t know what the solution is.