# A563 / A607 Junction, Leicester: Query
**URL:** https://www.waze.com/discuss/t/a563-a607-junction-leicester-query/230966
**Category:** United Kingdom
**Created:** [July 20, 2016, 10:55am UTC](https://www.waze.com/discuss/t/a563-a607-junction-leicester-query/230966 "2016-07-20T10:55:15Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@venishbede](https://www.waze.com/discuss/u/venishbede)
#### Post date: [July 20, 2016, 10:55am UTC](https://www.waze.com/discuss/t/a563-a607-junction-leicester-query/230966/1 "2016-07-20T10:55:15Z")
[https://www.waze.com/editor/?env=row&lon=-1.10780&lat=52.66725&layers=2981&zoom=7&mode=0&mapProblemFilter=0&mapUpdateRequestFilter=0&venueFilter=0&segments=122636403](https://www.waze.com/editor/?env=row&lon=-1.10780&lat=52.66725&layers=2981&zoom=7&mode=0&mapProblemFilter=0&mapUpdateRequestFilter=0&venueFilter=0&segments=122636403)
Hi all,
See above link for the junction in question.
There is a UR presenting the problem at hand: at present the turn permissions allow U-turns within the junction. On the one hand this is a “use the transparent aperture in front of you” situation, but on the other is there a more elegant solution to employ (while preserving a semblance of simplicity to the map)?
Thanks.
---
### Author:  [@atrophicshiner](https://www.waze.com/discuss/u/atrophicshiner)
#### Post date: [July 20, 2016, 12:51pm UTC](https://www.waze.com/discuss/t/a563-a607-junction-leicester-query/230966/2 "2016-07-20T12:51:18Z")
This is an easy one… once the segments are unlocked to your level 😉
Waze has a [built in u-turn prevention](https://wiki.waze.com/wiki/Routing_penalties/Controlling_U-turn_penalties#Preventing_median_U-turns) as long as 3 conditions are met:
- Three segments: The U-turn is a reversal of driving direction through three segments:
an incoming segment, a single median segment and an outgoing segment.
- Short median: The median segment is shorter than 15 meters (49.21 feet).
As a safety margin, leave a 1 m buffer zone by using 14 meters (45.93 feet) or less.
- In/out parallelism: The in and out segments are within ±5° of parallel to each other.
In this case the second condition is not met as [both these segments are 62.34ft](https://www.waze.com/en-GB/editor/?env=row&lon=-1.10770&lat=52.66756&zoom=7&segments=122636404,122636405) long, if they were shortened then the u-turn prevention mechanism should work.
---
### Author:  [@venishbede](https://www.waze.com/discuss/u/venishbede)
#### Post date: [July 20, 2016, 1:33pm UTC](https://www.waze.com/discuss/t/a563-a607-junction-leicester-query/230966/3 "2016-07-20T13:33:27Z")
And that would qualify as an elegant solution.
I shall proceed to the unlock forum - thanks for the explanation 🙂