The AI likes Bridges

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CTarana45
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The AI likes Bridges

Post by CTarana45 »

The AI likes Bridges Over Level Crossings! :lol:

Christopher Tarana
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jfs
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Re: The AI likes Bridges

Post by jfs »

That's a change to down building that was made a few years ago, I think either in version 1.11 or in version 12. Towns build bridges over railways instead of level crossings.
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odisseus
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Re: The AI likes Bridges

Post by odisseus »

By the way, I think towns should build more level crossings. In reality, this is the default mode unless either the track or the road is very busy, or there already is a height difference between the two.
We know that the OP tends to build very sparse networks with barely any signals at all, so in his case all those bridges could have been nicely done without.
skc
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Re: The AI likes Bridges

Post by skc »

odisseus wrote: 17 Nov 2022 02:13 By the way, I think towns should build more level crossings. In reality, this is the default mode unless either the track or the road is very busy, or there already is a height difference between the two.
We know that the OP tends to build very sparse networks with barely any signals at all, so in his case all those bridges could have been nicely done without.
In some parts of the world, the train drivers' unions have a rule that their members are not allowed to drive trains through new level crossings, so any town expansion requires grade separated crossings to be used.
This applies to both extensions of the train networks as well as new road construction. The unions will, rightly, sight safety concerns as their reason for the rule.
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odisseus
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Re: The AI likes Bridges

Post by odisseus »

That's a good rule, but not very practical. Does every factory spur, on which a supply train passes maybe once a week, require building a bridge on every street and lane it crosses?

I bet opposite examples are much more numerous across the world. In fact, level crossings can sometimes get quite extreme...
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Re: The AI likes Bridges

Post by skc »

odisseus wrote: 17 Nov 2022 07:59 That's a good rule, but not very practical. Does every factory spur, on which a supply train passes maybe once a week, require building a bridge on every street and lane it crosses?
If it was built as a 'greenfield'/new extension of the rail network, then it is highly likely that no level crossings will be built. If the line was previously closed, but the rails were left in place (i.e. 'brownfield' extension), then the level crossings might not be removed - it would depend on expected traffic levels (both road and rail).

Existing level crossings are often unaffected by this sort of rule.

In Melbourne, Australia, when the suburban rail line to the suburb of Epping was extended to South Morang, the line was also duplicated from Keon Park to Epping. There was a single-track level crossings at Settlement Road, Station St (Thomastown), Station St (Lalor) and Childs Road, which were upgraded to dual-track level crossings. These would have all been impractical to grade separate without completely closing the line for some time as there is no room on either side of the rail corridor to build the grade separations.

The station at Epping was moved further down the line to be on the other side of a road (Cooper St). The rail line had many years previously been closed beyond Epping station, but the corridor (and track) was still present. As Melbourne has spread north, the road traffic level along Cooper St has increased massively such that it wasn't suitable to just re-instate the level crossing and put a 2nd track across it, so it was grade separated (road over rail). The rail line dives under Pindari Ave, Civic Drive, McDonalds Road, and Plenty Road, and then bridges over Hawkstove Parade/McArthurs Rd (Hawkstowe Station is built on this bridge), The Parkway, and Bridge Inn Road (Mernda station is built on this bridge).
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