The placement of the steering wheel towards the center of the road is based on the fact that it's a hell of a lot more important for road users to keep from hitting one another in head-on collisions than it is for them to be able to judge how much clearance they have to something on the side of the road. The former happens every few seconds, the latter happens for some people every few years, or at most a few times an hour.
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Work: the 8 hours that separates bike rides.