Switzerland drives on the right.

-Tor

I've noticed that planes board on the left, as if they too drive on the left. It seems only natural to me!

At the end of the World War I, most fighter aircraft were designed and fitted with rotary engines. When it came to steering these rotary-engine aircraft, turning to the left was easier because it followed the torque of the engine, whereas turning to the right was harder, as it was against the torque (twisting) forces. Hence, it would require more rudder movement to compensate for the forces. Because of this, pilots chose to turn left as a more convenient manoeuvre and thus, most traffic patterns in the air around airfields involved mainly left turns.

When bigger planes were designed with side-to-side seating, the co-pilot was made to sit on the right. The left-hand seat was made exclusively for the captain. It comes with complete flight instruments and controls. This seat also afforded better visibility with the assumption that more frequent left turns are made during the flight.

Interesting!

But they run trains on the left. Seems logical!

In most countries, the “rule of the road” for trains is the same as for road traffic. For example, in England, where cars drive on the left of the road, trains run on the left hand of a pair of rail tracks, while in Germany, where cars drive on the right, trains use the right hand track of the pair. France is an exception to this rule. Cars drive on the right, but trains run on the left. This is because the early railways were mainly built using British expertise and standard equipment “out of the box”. No major operational problems are caused by this discrepancy, but it did give rise to an oddity: between the end of Franco-Prussian war of 1871 and the end of the First World War, the provinces of Alsace and Lorraine formed part of the German Empire, and during this time their lines were converted to right-hand running. When the provinces were returned to France in 1919, right hand running was left in place. To cope with the change from left hand to right hand running at places where there was no necessity to stop for a border crossing, a number of flyovers or sauts de mouton (literally, “sheep jumps”) were installed whose sole purpose was to take one running line over the top of another in the opposite direction.

The Paris Métro also runs on the right; this is believed to be because the first lines, opened at the beginning of the 20th century, were closely based on electric tram technology and operation. Paris trams of course had to run on the right when operating in the streets.

...some types of them such as funiculars alternate their direction of running every time.

Despite all the cool stuff he did around computing I was always impressed that Babbage also invented the cow catcher for the front of locomotives.