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This is an accepted version of this page This is the latest accepted revision, reviewed on 5 March 2025. Directionality of traffic flow by jurisdiction Countries by direction of road traffic, c. 2020 Left-hand traffic Right-hand traffic No data Left-hand traffic (LHT) and right-hand traffic (RHT) are the practices, in bidirectional traffic, of keeping to the left side or to the right side of ...
Braess's paradox is the observation that adding one or more roads to a road network can slow down overall traffic flow through it. The paradox was first discovered by Arthur Pigou in 1920, [1] and later named after the German mathematician Dietrich Braess in 1968.
The three second rule is a time for the defensive driver to judge the minimum safe trailing distance to help avoid collisions under ideal driving conditions. The red car's driver picks a tree to judge a two-second safety buffer. The two-second rule is a rule of thumb by which a driver may maintain a safe trailing distance at any speed.
The Schengen Agreement (English: / ˈ ʃ ɛ ŋ ə n / SHENG-ən, Luxembourgish: [ˈʃæŋən] ⓘ) is a treaty which led to the creation of Europe's Schengen Area, in which internal border checks have largely been abolished.
The difference in percentages is so close (the Bridge Encyclopedia states that the finesse is a 50% probability of success holding 8 cards, while the drop has a 53% holding 9 cards) that the slightest inference might influence a player to choose to finesse or to drop with nine cards.
In organic chemistry, an anti-Bredt molecule is a bridged molecule with a double bond at the bridgehead. Bredt's rule is the empirical observation that such molecules only form in large ring systems.
Generally speaking, at a slip road onto a controlled-access highway or otherwise, traffic on the highway has priority over traffic joining at the slip road, and therefore the slip road traffic should accelerate to the speed on the major road and merge into a gap in the stream of traffic in lane one.
Moreover when the bridge is open the channel is completely free as the mechanism has rolled away the bridge from the edge leaving the passage free for wide traffic. [4] The first rolling lift bridge ever built was the 1895-opened Van Buren Street Bridge (long since replaced by a newer bridge of a non-rolling bascule type) in the city of Chicago ...