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xkcd #2932: Driving PSA
(imgs.xkcd.com)
Alt text:
This PSA brought to you by several would-be assassins who tried to wave me in front of speeding cars in the last month and who will have to try harder next time.
Does this intersection not have traffic lights? It seems very dangerous without, since the driver from the left can't see the fast through-traffic well. They are also crossing three streams of traffic at once.
In the comic would be space for an extra merging lane at the top, so that the driver from the left only crosses two traffic streams and then safely merges into the 45mph stream from the merging lane
A grocery store near my house has an entrance exactly like this, except the roads are 3 lanes each. It's genuinely a nightmare to navigate if it's even remotely busy.
A simple (albeit inconvenient) way to improve safety in this case is to prohibit turning left and allowing for a U turn somewhat close by.
A.k.a. a Michigan Left, one of those things like roundabouts that's safer and more efficient but people get annoyed at.