Routing penalties/U-turn minimum: Difference between revisions View history

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<!-- This template has three possible outputs, the threshold length, or 1 meter greater, or 1 meter less. the default is the threshold length, the other 2 can be obtained using a variable. The greater or less than outputs are calculated automatically, ONLY UPDATE THE MAIN THRESHOLD LENGTH BELOW
{{#ifeq:{{{1|}}}|greater|{{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} + 1}}&nbsp;meters ({{#expr: {{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} + 1}} * 3.2808 round 2}}&nbsp;feet)
-->{{#ifeq:{{{1|}}}|greater|<!-- if the parameter is set to greater provide an output which is 1 meter greater than the default -->{{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} + 1}}&nbsp;meters ({{#expr: {{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} + 1}} * 3.2808 round 2}}&nbsp;feet)
|{{#ifeq:{{{1|}}}|less|{{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} - 1}}&nbsp;meters ({{#expr: {{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} - 1}} * 3.2808 round 2}}&nbsp;feet)
|{{#ifeq:{{{1|}}}|less|<!-- if the parameter is set to less provide an output which is 1 meter less than the default -->{{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} - 1}}&nbsp;meters ({{#expr: {{#expr: {{padleft:|2|{{:Routing_penalties/U-turn_minimum}}}} - 1}} * 3.2808 round 2}}&nbsp;feet)
|15&nbsp;meters (49.21&nbsp;feet)}}}}<noinclude>{{:Routing penalties/U-turn minimum|less}}{{documentation}}</noinclude>
|<!-- if no parameter is set provide the default output
 
set the threshold length here
 
--> 15&nbsp;meters (49.21&nbsp;feet)}}}}<noinclude>{{:Routing penalties/U-turn minimum|less}}{{documentation}}</noinclude>

Revision as of 21:41, 30 August 2016

15 meters (49.21 feet)Expression error: Unexpected < operator. meters (Expression error: Unexpected < operator. feet)

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This template is used to display the minimum distance required to allow two left turns, or two right turns to generate a U-turn in a route. This template enables this number to be changed if necessary over time without having to change the individual pages.

Other conditions will also contribute to u-turn allowance or prevention. For more information see preventing medial u-turns.

The template has two possible outputs to display the minimum distance required to enable a u-turn and the maximum distance to disable a u-turn. The default output is the minimum distance to enable a u-turn.


Parameters

When the template is used with |less, |below, or |disable, the output will be the distance below the threshold and therefore the maximum distance that will disable a u-turn.

When the template is used without any parameter (or any other undefined parameter), the output will be the minimum distance above the threshold that will allow a u-turn.

Usage

Place {{[[::Routing_penalties/U-turn_minimum|:Routing_penalties/U-turn_minimum]]}} on any page where you want to display the minimum segment length to allow a u-turn:

15 meters (49.21 feet)


Place {{[[::Routing_penalties/U-turn_minimum|:Routing_penalties/U-turn_minimum]]|less}} (or one of the other parameters listed above) anywhere you want to display the maximum length of a segment that will disable a u-turn.

Expression error: Unexpected < operator. meters (Expression error: Unexpected < operator. feet)


The gap in the two thresholds is due to metric and imperial rounding issues, so a buffer was built into this setting to prevent unexpected results. For more information on this issue, see WME segment length display.

The above documentation is transcluded from Routing penalties/U-turn minimum/doc.
Please add categories to the /doc subpage.
Subpages of this page.