# Intersection type - turn lanes

**URL:** <https://forum.irap.org/t/intersection-type-turn-lanes/428>\
**Category:** Coding\
**Created:** [August 15, 2019, 11:56pm UTC](https://forum.irap.org/t/intersection-type-turn-lanes/428 "2019-08-15T23:56:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![luke.rogers](https://forum.irap.org/letter_avatar_proxy/v4/letter/l/977dab/32.png) [@luke.rogers](https://forum.irap.org/u/luke.rogers)\
**Post date:** [August 15, 2019, 11:56pm UTC](https://forum.irap.org/t/intersection-type-turn-lanes/428/1 "2019-08-15T23:56:13Z")

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With a 4-leg intersection do both directions on the main (surveyed) road need to have turn lanes in order to code ‘4-leg with protected turn lane’? For example if there is a turn lane provided for only one direction/one leg do we still code turn lane or do we use the worst case scenario rule?

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**Author:** ![rahulsharma.sharma31](https://forum.irap.org/user_avatar/forum.irap.org/rahulsharma.sharma31/32/236_2.png) [@rahulsharma.sharma31](https://forum.irap.org/u/rahulsharma.sharma31)\
**Post date:** [September 5, 2019, 1:02pm UTC](https://forum.irap.org/t/intersection-type-turn-lanes/428/2 "2019-09-05T13:02:21Z")

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hey  
As per road safety aspects, we should provide turn lanes on both approaches of main carriageway.And if one turning lane is missing then we should code it as 4 leg intersection with unprotected turn lane.  
Thanks  
Regards