Dublin Bus routes had to be curtailed 108 times last year because of anti-social behaviour.
The figures provided to Sinn Féin TD Mark Ward from the Transport Minister show the number 40 route, from Charlestown Shopping Centre To Liffey Valley Shopping Centre, has been curtailed 35 times this year.
Rocks and fireworks being thrown at Dublin Bus vehicles are some of the reasons why routes have been curtailed 92 times this year.
While there were 21 incidents of anti-social behaviour involving the number 27, that operates from Clare Hall to Jobstown.