3.8.4. Traffic lights

This section describes techniques and rules for working with “Traffic light” items of the “Road infrastructure” category:

Information about “Traffic light” items includes the following components:

  • The intersection where the traffic light is located.
  • The road sections that are monitored by the light.

3.8.4.1. Traffic lights: drawing rules

Enter traffic lights at points in the road network or road intersections (not at the lines where traffic stops before an intersection).

You can only enter one traffic light at a point in the road network (or intersection).

3.8.4.1.1

Traffic lights that include more than two signals and are intended for regulating traffic are “Traffic light” items of the “Road infrastructure” category:

  • All motor vehicles
  • Only car traffic.

Other types of traffic lights:

  • Traffic lights installed at railway crossings
  • Traffic lights for regulating traffic on the territories of institutions and organizations and in areas where the road narrows
  • Reverse traffic lights
  • Traffic lights that serve other purposes (for example, at toll booths, borders and monitoring points, traffic police posts, fire stations, emergency management departments, etc.)
  • Traffic lights that control public transport traffic by lane
  • Traffic lights for bicyclists
  • Traffic lights on driving-practice areas of driving schools

— should not be drawn (these items will be deleted from the map).

3.8.4.1.2

“Traffic lights” are used to plot car routes, so it is important that the item's parameters (sections of road controlled by the traffic light) correspond to reality. The road should be drawn correctly (with one or two lines) and the permitted traffic directions (one-way or two-ways) for that road section should be marked.

Examples of traffic light drawings are given below (they are represented as and the road sections that they regulate are marked with red triangles).

3.8.4.1.2.1

If there are exit lanes or u-turn areas at the intersection, then draw the traffic lights this way:

  1. If the exit lane or u-turn area is not regulated by the traffic light (at an intersection of main roads):

  2. If the passage from the main road to the exit lane/u-turn area at an intersection is regulated by a traffic light, draw two traffic lights.

    The first should be at the intersection of the main roads, and the second — at the exit lane/u-turn area.

    Don't draw the second one at the intersection of the exit lane/u-turn area with the main road, but rather at a distance of up to 10 m after the spot where the exit lane/u-turn area branches off: either at the existing intersection with another road, or at a newly created one (if there is no such intersection).

    For example, the traffic light in the upper pair of drawings regulates traffic moving both straight and to the left (or making a u-turn) from Ispytateli Ave. towards Botatyrsky Ave. Therefore, you should draw it using two traffic lights: at the road intersection (blue arrow) and at the u-turn (red arrow). The second one is drawn at a distance of less than 10 m from the point where the road branches off.

    The lower pair of drawings depicts a similar situation (traffic is moving along Leninsky Ave. towards the city center before the intersection with Kravchenko St.):

  3. If the passage from the exit lane/u-turn area to the main road at the intersection is regulated by a traffic light, then draw the traffic light both at the intersection of the main roads (red arrow) and at the end of the exit lane/u-turn area and set the direction going only toward the exit lane (blue arrow):

  4. If the main roads only intersect at the exit lanes (i.e. it doesn't intersect at the main parts):

    1. If the passage from the main road to the exit lane/u-turn area at the intersection is regulated by a traffic light, then draw that light at the spot where the exit lane branches off from the main road:

    2. If the passage from the exit lane/u-turn area to the main road is regulated by a traffic light, then draw that light at the spot where the exit lane meets the main road:

3.8.4.1.2.2

When a pedestrian crosswalk is part of a regulated intersection, put the traffic light that regulates it at the point where the vehicle lanes intersect (rather that directly on the crosswalk):

3.8.4.1.2.3

Don't include pedestrian crosswalks among the road sections regulated by traffic lights:

3.8.4.1.2.4

If a traffic light located close to an intersection regulates passage through the pedestrian crosswalk (but not passage through the intersection), but it does regulate the turn before the crossing, then draw that traffic light at the first intersection that it regulates (rather than directly on the intersection).

For example, the traffic light in the photograph regulates the pedestrian crosswalk. Due to the position of the stop line (blue arrow) though, the traffic light also regulates turns before the intersection:

In this case you should draw two traffic lights:

It is not correct to combine these traffic lights (at the intersection):

3.8.4.1.3 Examples of placing traffic lights at various intersections
3.8.4.1.3.1

At the intersection of a road drawn using two-line with a one-line road:

3.8.4.1.3.2

At the intersection of two two-line roads:

3.8.4.1.3.3

Passage through an intersection with a circle road:

3.8.4.2. Traffic light: add

To draw traffic lights:

  1. You can draw traffic lights one of two ways: either using the Traffic light panel or using the Intersection panel. In the first case, the road intersection will be created automatically; in the second — an intersection that was created earlier will be used:

    1. Click

      .

      In the map item category menu, select Road infrastructure → Traffic light.

      A Traffic light panel will open.

    2. Click the intersection the traffic light should be set on to select it on the map.

      In the Intersection panel that opens, click Add near “Traffic light”:

      A Traffic light panel will open.

  2. Click to select the place where you want to place the traffic light on the map:

    If an intersection was not created earlier at the place where the traffic light should be, then this intersection will be created automatically.

  3. Click on the map to enter the road sections that are controlled by the traffic light; the sections you select will be marked on the map:

    The Redraw button will be added to the toolbar.

    When you click on it, the data you entered will be deleted and you can add the traffic light again.

    Note.

    If you need to move the traffic light you're redrawing to a point where there is no intersection, then you need to create an intersection at that point ahead of time.

    If you need to move the traffic light you're redrawing to a point where there is already an intersection, then you don't need to prepare it ahead of time.

  4. Click Save in the attribute panel. Information about the traffic light at the intersection will be saved:

3.8.4.3. Traffic lights: edit, undo, send report to moderator

To edit a traffic light:

  1. Find the appropriate road intersection (information about the traffic light at the intersection is shown in the drawing and tool tip).

  2. Click to select the intersection on the map; the attribute panel for the intersection will open:

  3. In the Road intersection attribute panel, click on the link next to Traffic lights to open the traffic light attribute panel:

  4. To edit the item in the Traffic light panel, click Edit .

    Edit the traffic light parameters (the group of road sections it controls).

    The Redraw button will be added to the toolbar: .

    When you click on it, the data you entered will be deleted and you can add the traffic light again.

    Note.

    If you need to move the traffic light you're redrawing to a point where there is no intersection, then you need to create an intersection at that point ahead of time.

    If you need to move the traffic light you're redrawing to a point where there is already an intersection, then you don't need to prepare it ahead of time.

  5. On the item's attribute panel, click Save .

  6. You can use the Undo edits button to return an item to the condition it was in before you started editing it (all the way back to the condition it was in when it was last approved by a moderator). If the item was created recently and still hasn't been approved by the moderator, then undoing edits will result in the item being deleted.

    Only moderators have access to the Delete operation that lets them delete an item. YME users can delete items they created in error by undoing their own edits until the item disappears (if the item was just created and it was not approved by a moderator yet). If an item that was created earlier and already approved by a moderator needs to be deleted, you must report it to the moderator.

    The process for undoing edits is described in section 2.10.6. Item: undo edit, report to moderator, delete item; get link to item.

  7. If an item was already approved by the moderator, then undoing edits will return the item to the condition it was in when it was approved. In this case users cannot delete an item by themselves and should report the item to the moderator for it to be deleted. You can sent reports to the moderator regarding a number of issues (not only to request that an item be deleted).

    The procedure for sending reports is described in section 2.10.6. Item: undo edit, report to moderator, delete item; get link to item.