[pgrouting-users] Multiple Turn Restrictions?

[Anton Patrushev]

You just need to add one more row for that edge.
Like this:

 gid | source | target | cost | x1 | y1 | x2 | y2 | to_cost | rule
 -----+--------+--------+------+----+----+----+----+---------+------
 11 |      3 |     10 |    2 |  4 |  3 |  4 |  5 |    1000 | 4
 11 |      3 |     10 |    2 |  4 |  3 |  4 |  5 |    1000 | 12

And then you always need to order your data by gid when you load it to
a shortest path function..

Anton.

On Mon, Aug 18, 2008 at 11:06 PM, Stephen Woodbridge
<woodbri at swoodbridge.com> wrote:
> Anton,
>
> Ok, that makes sense, but I still do not see how to specify multiple
> restrictions for a single edge. For example in the graph below how to I
> specify the cost of going from either edge EB(4) or CB(12) to edge DB(11) is
> 1000. Both of these turns should be disallowed.
>
> -Steve
>
> PS: Sorry looks like the list is still broken regardless of what email I
> send it to.
>
>
> Anton Patrushev wrote:
>>
>> Steve,
>>
>> Here is the table for your case:
>>
>>  Edge  |  Source | Target | Cost | to_cost | rule
>>  AB    |  A      | B      | 1    | 1000    | EB
>>  BC    |  B      | C      | 1    | 1000    | DB
>>  EB    |  E      | B      | 2    | 1000    | BC
>>
>> and nothing more.
>>
>>>  gid | source | target | cost | x1 | y1 | x2 | y2 | to_cost | rule
>>> -----+--------+--------+------+----+----+----+----+---------+------
>>>  12 |      3 |     10 |    2 |  4 |  3 |  4 |  5 |    1000 | 14, 4
>>
>> This means completely different things.
>> For example, you have a graph like this:
>>
>>         C
>>          |
>>          |
>> A-------B--------E--------F
>>          |          |
>>          |          |
>>         D         |
>>                    G
>>
>> where edge ids are:
>> AB: 10
>> BC: 12
>> BD: 11
>> BE: 4
>> EF: 2
>> EG: 14
>>
>> So, the restriction we have describes a way 14->4->12 (G->E->B->C)
>> which is restricted (has cost 1000).
>>
>> Anton.
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>
>