看看NEW YORK STATE的条例。我觉得应该是安全第一，条例紧跟。

How to Pass on the Right

You can normally pass other vehicles on the left, some situations allow you to pass on the right.  You can pass a vehicle on the right only in the conditions listed below, and only if you can pass safely. You can not drive on or across the shoulder or edge line of the road unless a sign allows it or when indicated by a traffic officer (see Chapter 4). You may pass on the right:

• When a vehicle ahead makes a left turn.
   
• When you are on a two-way road that is marked for two or more lanes or is wide enough for two or more lanes, and passing is not prohibited by signs or restricted by parked cars or other obstructions.
   
• When you drive on a one-way road that is marked for two or more lanes or is wide enough for two or more lanes, and passing is not prohibited by signs or restricted by parked cars or other obstructions.

If you prepare to pass on the right at an intersection, check the traffic ahead carefully. Make sure a vehicle that is approaching  is not preparing to turn left into your path, and watch at the right side of the road for pedestrians, bicyclists, in-line skaters and moped riders.

Before you pass on the right on multi-lane roads like expressways, make sure you check your mirrors, use the correct signals for the lane change and look over your right shoulder for other vehicles. After you pass, make sure to quickly look over your left shoulder and to signal before you return to the left lane.

所有跟帖： 

• 像有些大城市道路有4-5个LANE，也必须在左边超车？ -聊聊看- ♂ (0 bytes) () 12/28/2015 postreply 19:10:40