Guide
The infrastructure, explained
This is not a list of recommendations. It is a series of explanations of what you see on the road: what it is, what it does, and what you ought to know.
Start with any one of them. There is no particular order.
Motorway
The M50: the busiest motorway
The history of the ring, its junctions, its signage, and what happens when it closes.
Read
Payments
Tolling: how roads are paid for
Gate systems, devices and plate registration — and what you should check before you cross.
Read
Structures
Tunnels: road under water
Ventilation, lighting, traffic control and maintenance — what happens inside a tunnel.
Read
Structures
Bridges: what makes a good structure
Four kinds of bridge in Ireland, and three questions for reading them.
ReadHow to read any road
You need not learn everything at once. There are three questions you always ask, wherever you happen to be.
When you enter a road you do not know, you begin with the kind of road it is. That is the most important thing to know, because it settles the rules that apply to it, the speed you may reach on it, and the things that are not permitted there.
Then come the signs. You need not read every one — you need only find the one nearest to you. Often the rest are there to inform other people.
Finally comes context: the weather, the traffic, the hour. This is the part that cannot be learned from this site or from any other page. It depends on the day.
Another way in
If the work of engineers interests you, look at the bridges — it is the clearest place to see the decisions that have to be made.
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Contact
m50nline, 73 Clontarf Rd, Clontarf East, Dublin 3, D03 EP93, Ireland
+353 1 833 6364