Skip to main content

The effect of speed bumps and humps on the concentrations of CO, NO and NO2 in ambient air


Traffic-calming measures act as the instruments to reduce the speed of vehicles. They make a major contribution to road safety; however, on the other hand, air pollution is more likely to occur due to the fact that motor vehicles use brakes and accelerate more frequently. The study reviewed two types of traffic-calming devices, that is, trapezoid-shaped speed humps made of asphalt and plastic circular speed bumps. The obtained results showed an increase in the concentrations of NO, NO2 and CO found in the pollutants emitted from the vehicles approaching speed bumps/humps compared to the concentrations of the same types of pollutants at the check points. As for trapezoidal speed humps, the concentration of nitrogen dioxide increased on average by 1.8 times, that of nitrogen monoxide by 4.3 times and that of carbon monoxide by 2.2 times. Meanwhile, the concentration of nitrogen dioxide at circular plastic speed bumps rose on average by 2.5 times, that of nitric monoxide by 5.0 times and that of carbon monoxide by 3.2 times.

This is a preview of subscription content, access via your institution.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9


Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to T. Januševičius.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Januševičius, T., Grubliauskas, R. The effect of speed bumps and humps on the concentrations of CO, NO and NO2 in ambient air. Air Qual Atmos Health 12, 635–642 (2019).

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI:


  • Speed bumps
  • Speed humps
  • Carbon monoxide
  • Nitrogen oxides
  • Pollution caused by road transport