The number of deaths on county roads has seen an alarming spike in 2012.
A total of 36 people were killed in traffic collisions across the county last year – a big increase from the 19 in 2011 and a sudden end to a declining trend in the past few years.
Police said the figures should be a warning to motorists and added there has not been a common trend in the deaths.
Speaking before the most recent deaths of brothers Jay and Rik Dhesi, who died following a crash on the A6 near Burton Latimer on Sunday and the death of Melanie Parkinson, 43, from Barton Seagrave, following a crash on the A14 at Kettering on Thursday, December 27, Deputy Chief Constable Suzette Davenport said: “Tragically, 33 people have now lost their lives on our roads this year and our thoughts, as always, are with those who have lost loved ones.
“Motorists can take some simple steps to ensure they and their passengers are as safe as possible while using Northamptonshire’s roads. Always use your seatbelt, switch off your mobile phone, make sure you drive appropriately to the weather conditions and always drive within the speed limit.
“Also, never drink and drive and make sure you are not too tired while behind the wheel.”
She added: “A fatal or serious injury road traffic collision can have a massive impact on the people and loved ones of those involved and it is the duty of every motorist to make sure they act responsibly while behind the wheel of their car.”
In Northamptonshire, the number of road deaths had fallen every year since 2006, when 74 people were killed in accidents.
Recent accidents have included the deaths of two Latvian men, Jevgenijs Draguns, 22, and Igor Zunda, 33, on the A43 near Duddington in December.
Cllr Brendan Glynane, leader of the county Liberal Democrats, criticised the Conservative administration at County Hall for not funding the police and council’s road safety partnership and for not turning back on speed cameras despite safety concerns.