Colorado State Patrol's first checkpoint of the season saw roadside sobriety tests within the first 20 minutes of last nights efforts.
Through the night, CSP talked to more than 450 drivers- of those drivers there were 5 roadside sobriety tests- two of which led to arrests.
The first being a driving while under the influence of alcohol and the second a DUID for driving under the influence of marijuana.
CSP says both drivers consented to blood tests.
The CSP considers the first night a success, telling News Channel Five that drivers were thankful for the troopers presence on the road.
From 2014 to 2015 both DUI arrests and fatalities have decreased and the CSP hopes these efforts continue the trend.
Copyright 2017 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.