Blacklist steps from the car profile

profiles/car.lua

@@ -91,7 +91,8 @@ local profile = {
     'toll',
     'reversible',
     'impassable',
-    'hov_lanes'
+    'hov_lanes',
+    'steps'
   },
 
   speeds = Sequence {

profiles/lib/handlers.lua

@@ -437,6 +437,11 @@ function Handlers.handle_blocked_ways(way,result,data,profile)
     return false
   end
 
+  -- don't route over steps
+  if profile.avoid.steps and data.highway == "steps" then
+    return false
+  end
+
   -- construction
   -- TODO if highway is valid then we shouldn't check railway, and vica versa
   if profile.avoid.construction and (data.highway == 'construction' or way:get_value_by_key('railway') == 'construction') then