Driving on the Motorway: The Effect of Alternating Speed on Driver’s activation level and mental effort

  • Published: Universidad de Valencia, 2002
  • Authors: Tejero, P. and Chóliz, M.
  • Date Added: 07 Apr 2016
  • Last Update: 07 Apr 2016
  • Format: pdf


To provide empirical evidence regarding the effects of alternating speed on the level of driver activation on a motorway route in real traffic.


Monitoring drivers of various ages travelling at constant and varying speeds via an Electroencephalogram (EEG) and heart rate monitor.

Key Findings:

  • Driver Electroencephalography (EEG) – electrical activity in the brain –tended to be significantly higher when speed was modified periodically than when it remained constant.

  • No significant difference was found relating to cardiovascular measurements during the same experiment.




Non-UK research (Spain), but applicable to drivers worldwide.