“These incidents cause devastation to so many people yet could have been avoided if the motorist had chosen not to get behind the wheel while under the influence.
Merseyside Police arrested 283 motorists in June and July, compared to 192 in 2015.
Of the 283 people, 164 were arrested for drink drive offences such as failing a breath test or refusing to give one, and 119 drivers tested positive for drugs such as cannabis or cocaine.
“We have caught more people drink and drug driving this summer than last so it is positive that these people will no longer be able to put lives at risk while they are banned.”
CI Jones said: “The vast majority we did stop, passed the tests so we know it is only a minority of drivers who are behaving like this. “Our focus will remain on removing all drink and drug drivers from the roads of Merseyside and my message to would-be offenders is that you can be stopped at any time by any police officer and be tested for alcohol or drugs.
“It only takes a matter of minutes for police to obtain a result and if you fail you will be arrested and taken to a police cell with the potential of a driving ban and a criminal record, which could cost you your job and affect not only you but your family.