Busy streets lanes near an intersection sometimes have arrow markings such as "straight only", and "right/left only":

enter image description here

If you are on the "straight only" lane, when is the latest that you may enter into the "right/left only lane" before coming close to the intersection in New York City?

If you had entered into the lane too late and gotten a ticket (1163a vtl for an "Improper Turn"), what defense could you use at a court to lessen your judgement?

  • 2
    Usually solid white lines cannot be crossed, so before you encounter those. If you've ever gone through a tunnel with two or more lanes in the same direction, you may notice prior to actually entering the tunnel there are signs saying don't pass and the broken white lines become solid.
    – Andy
    Aug 5, 2015 at 22:56

1 Answer 1


The statute doesn't say much in detail (from the New York State Vehicle and Traffic Law (unfortunately, the site works on javascript, so, you have to navigate by opening the "Laws" menu and then making your way from there):

   § 1128. Driving  on  roadways  laned for traffic. Whenever any roadway
has been divided into two or more clearly marked lanes for  traffic  the
following  rules  in  addition  to  all others consistent herewith shall
  (a) A vehicle shall be driven as nearly as practicable entirely within
a single lane and shall not be moved from such lane until the driver has
first ascertained that such movement can be made with safety.

(b and c are not relevant)

   (d)  When  official markings are in place indicating those portions of
any roadway where crossing such markings would be especially  hazardous,
no  driver  of a vehicle proceeding along such highway shall at any time
drive across such markings.

The last bit, (d), is of interest. Basically, you are allowed to change into the correct lane as long as the pavement markings permit it. The pavement markings at an intersection with a sign like the one you posted are generally solid white lines. These details are governed by the Manual on Uniform Traffic Control Devices, published by the Federal Highway Administration. Their information on pavement markings is available both in PDF and HTML format. Pertinently, it says:

A double white line indicates that lane changes are prohibited. A single white line indicates that lane changes are discouraged. A dashed white line indicates that lane changes are allowed.

Therefore, if the lines separating the lanes are, as usual, solid white lines, you are encouraged to get into the correct lane before the beginning of the solid white line, but you are permitted to change lanes across the solid lines. An example of such marking is in the right-hand example in the given image:

Intersection marking examples from the US Manual on Uniform Traffic Control Devices

One point of possible contention is that the New York State Driver's Manual describes the meaning of the solid white line somewhat differently:

One solid line: You can pass other vehicles or change lanes, but you can only do so when obstructions in the road or traffic conditions make it necessary.

I don't see any statutory basis for that description, but I may well have overlooked something.

I suppose you know where the signs are specified, since you probably got the image from there, but for anyone reading this who does not know, they are specified in the publication Standard Highway Signs. This is available as a set of PDF files; the relevant file is the one containing regulatory signs; the sign in the question is 1-33, and it is in the midst of several similar signs.

If a police officer ticketed you for getting into the lane too late, I suppose you should find a lawyer who specializes in fighting traffic tickets, and ask whether there really is such a thing as "too late." By my reading of the law, there isn't. (Of course, if it's dangerous to change lanes because of other vehicles, you shouldn't change lanes, but if you had, I would suppose the officer should have written a ticket for some other violation, like reckless driving.)

  • Thanks this is useful for future reference - it seems that you can always enter into the left/right only lanes. Unfortunately, the ticket was actually written up for an 1163a violation ("improper turn"). Perhaps the answer officer saw me turn from the straight only while at the intersection...
    – TheOne
    Jul 26, 2015 at 10:38
  • All states, by accepting federal highway funds, must agree to incorporate MUTCD into their vehicle code. Could it be they are relying on those regulations?
    – Andy
    Aug 5, 2015 at 22:58
  • @Andy MUTCD doesn't concern driving rules; it concerns traffic control devices and the like. It says how the intersection should be marked, but it does not say anything about the point beyond which it is illegal to cross from one lane to another.
    – phoog
    Sep 24, 2015 at 22:59

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