A van driver has been arrested on suspicion of drug driving after an elderly man was knocked over in Egremont.
It happened on Egremont's Main Street outside the Co-Op store at 7am on Saturday 24 March.
The 78-year-old man suffered serious injuries and remains in a stable condition at the Royal Victoria Infirmary in Newcastle.
The van driver, a 27-year-old man from St Helens, Merseyside, has been released under further investigation.
Police Scotland have started a week-long drink and drug driving campaign.
Police will be patrolling roads, stopping suspicious drivers to make them use a breathalyser.
They say it reflects the time of the year when statistics show Scotland's road users are at a their highest risk of being killed or injured because a driver was under the influence of alcohol or drugs.
Cumbria Constabulary will be targeting those who drive under the influence of alcohol or drugs this month using new legislation.
As part of its annual summer campaign, it will use new drug tests that place legal limits on eight illegal drugs and eight medicinal drugs.
Police will enforce the new laws with roadside saliva-testing kits followed by blood and urine tests at a station.
Last year's campaign saw 1,587 breath tests conducted, and 66 people subsequently arrested on suspicion of driving under the influence of alcohol or drugs.
The number of people driving under the influence of drink or drugs over the christmas period has fallen.
73 people were caught during the annual campaign in 2013.
It's down from 82 people for the same period the year before.
11 people were arrested in less than 35 hours in connection with Cumbria Police's drink drive campaign.
The arrests took place between 1am on Saturday and midday on Sunday.
Police say they were shocked by the number of motorists they arrested for either driving whilst above the legal alcohol limit or for being unfit to drive due to drugs.