Path: utzoo!mnetor!tmsoft!dptcdc!jarvis.csri.toronto.edu!csri.toronto.edu!clarke From: clarke@csri.toronto.edu (Jim Clarke) Newsgroups: ont.general Subject: Re: Highway Driving Rules Message-ID: <8904101406.AA16291@king.csri.toronto.edu> Date: 10 Apr 89 14:06:26 GMT References: <13189@watdragon.waterloo.edu> Distribution: ont Organization: University of Toronto, CSRI Lines: 29 Gee, we're really having fun here with this topic, aren't we? Here's my contribution: Somebody said he was annoyed by high beams flashed to say, "I'm about to pass you." This indeed seems unnecessary on busy divided highways, but on two-lane roads that are only intermittently used -- the situation where this custom arose, I presume -- it's a very useful custom. If you've been following a car for quite a while, waiting for a chance to pass, the driver you're following doesn't really have a way of knowing when you're going to judge it's safe to overtake, so he/she really does learn something from the flashed beams. Also, if both drivers do it right, there's a carefully-timed sequence of beam up and down changes to make sure that nobody's blinded and that the driver in front can see the upcoming curves, bumps, etc. The sequence is done better by drivers who are awake, as they might be after the warning flash. Things are really very different on two-lane roads from four-lane ones. And I notice that a lot of drivers now seem not to know how to deal with the two-lane situation, at least in the areas around Toronto where I get a chance to watch. Maybe in northern Ontario the old skills are still alive. My gosh, I sound old. -- Jim Clarke -- Dept. of Computer Science, Univ. of Toronto, Canada M5S 1A4 (416) 978-4058 clarke@csri.toronto.edu or clarke@csri.utoronto.ca or ...!{uunet, pyramid, watmath, ubc-cs}!utai!utcsri!clarke