I followed instructions in this answer to Creating Directional Flow Arrows for sewer lines? to add directional arrows to the one-way streets on a map I'm creating.

I've currently created a marker line with the standard arrow marker but there are a lot of one-way streets (and one-way street segments). So even with just a marker on the centerpoint of each line, I get something like the below image

enter image description here

I'm worried that if I dissolve streets together by name, that the direction of their drawing might get muddled (and the labels point in the wrong direction).

Do tutorials exist for labelling one-way streets in QGIS?

  • 2
    I would not suggest to dissolve by name. Streets might change driving direction in real world, and think of broad avenues consisting of thwo one-way-streets with some green in the middle.
    – AndreJ
    Commented Sep 4, 2016 at 5:33
  • 2
    Imho, your current approach is the only unambiguous way to label oneways. I'd recommend a more subtle symbol for the arrows but I wouldn't reduce their number.
    – underdark
    Commented Sep 4, 2016 at 8:22

1 Answer 1


You don't need to dissolve lines by name, as you can use the Merge connected lines to avoid duplicate labels option in the Rendering tab of Labels' options. This will reduce the number of labels, and helps to render long strings for roads composed from small segments.

enter image description here

There is also an option to add some extra characters to your labels to show the line direction. This option is in the Formatting tab of the Labels's option. Check for the Line direction symbol.

enter image description here

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