Number of road casualties in NSZs and their control neighbourhoods by year
| NSZ/control neighbourhood | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 |
| NSZs implemented in 2012 (4 NSZs) | 67 | 67 | 72 | − | 68 | 58 | 60 | 56 |
| Control neighbourhoods for 2012 NSZs | 178 | 170 | 177 | − | 191 | 170 | 177 | 162 |
| NSZs implemented in 2013 (9 NSZs) | 121 | 129 | 122 | 120 | − | 115 | 111 | 120 |
| Control neighbourhoods for 2013 NSZs | 583 | 594 | 603 | 567 | − | 565 | 559 | 572 |
| NSZs implemented in 2014 (5 NSZs) | 134 | 136 | 147 | 140 | 154 | − | 137 | 130 |
| Control neighbourhoods for 2014 NSZs | 401 | 403 | 418 | 426 | 415 | − | 417 | 404 |
| NSZs implemented in 2015 (8 NSZs) | 161 | 178 | 172 | 178 | 173 | 179 | − | 155 |
| Control neighbourhoods for 2015 NSZs | 640 | 658 | 646 | 656 | 643 | 676 | − | 712 |
The road casualties in implementation years of NSZs were not included in the analysis.
NSZ, neighbourhood slow zone.