From 20d629ac9e93c9d28d483d58bd19d4db82416346 Mon Sep 17 00:00:00 2001
From: SilentSpike <SilentSpike100+Github@gmail.com>
Date: Tue, 29 Jan 2019 14:13:14 +0000
Subject: [PATCH] Fix turn:lanes changing when way is reversed

---
 modules/actions/reverse.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/actions/reverse.js b/modules/actions/reverse.js
index abbfcb88a..fac6e9dfd 100644
--- a/modules/actions/reverse.js
+++ b/modules/actions/reverse.js
@@ -20,6 +20,7 @@ References:
 export function actionReverse(wayID, options) {
     var ignoreKey = /^.*(_|:)?(description|name|note|website|ref|source|comment|watch|attribution)(_|:)?/;
     var numeric = /^([+\-]?)(?=[\d.])/;
+    var turn_lanes = /^turn:lanes:?/;
     var keyReplacements = [
         [/:right$/, ':left'],
         [/:left$/, ':right'],
@@ -63,7 +64,10 @@ export function actionReverse(wayID, options) {
     function reverseValue(key, value) {
         if (ignoreKey.test(key)) return value;
 
-        if (key === 'incline' && numeric.test(value)) {
+        // Turn lanes are left/right to key (not way) direction - #5674
+        if (turn_lanes.test(key)) {
+            return value
+        } else if (key === 'incline' && numeric.test(value)) {
             return value.replace(numeric, function(_, sign) { return sign === '-' ? '' : '-'; });
         } else if (options && options.reverseOneway && key === 'oneway') {
             return onewayReplacements[value] || value;