Colorado State Patrol conducted its second multi-agency operation on Wednesday, March 5, to enforce the state’s chain law — but the results showed little change, despite twice as many participating agencies reporting data.

The department’s weekly chain law enforcement operations are carried out by Colorado State Troopers and partnering local agencies from Glenwood Springs to Golden, who perform chain carry checks along the Interstate 70 mountain corridor and enforce speed violations.

Reports for the operation’s second week included double the amount of reporting agencies, listing numbers from Colorado State Patrol, Clear Creek County Sheriff’s Office, Eagle Police, Glenwood Springs Police, Jefferson County Sheriff’s Office and Vail Police.

The increase in reporting agencies didn’t result in a notable change in vehicle stops or citations, however.

On March 5, officers made contact with 270 vehicles — just 13 more than the operation’s first enforcement day on Feb. 27.

Of the 270 vehicles, 162 were commercial vehicles traveling on the interstate. Enforcement agencies doled out a total of 62 citations, nearly half of which were for speeding. Five commercial vehicles were cited for failing to comply with Colorado chain law.

In comparison, the Colorado State Patrol’s first weekly enforcement operation on Feb. 27 — which only included numbers from Colorado State Patrol, Avon Police Department and Jefferson County Sheriff’s Office — led to officers making contact with 257 vehicles and giving out 48 speeding citations out of 59 total citations. Five commercial vehicles were cited for failing to comply with Colorado’s chain law.

The next Colorado State Patrol multi-agency enforcement operation will be held on Tuesday, March 11, with roughly 12 weeks remaining for enforcement operations before the end of chain law season. Weekly enforcement events will rotate days, and checks will be conducted when weather is not inclement to ensure commercial and private drivers are prepared.

Compliance with traction laws requires wheels on passenger vehicles to have a three-sixteenths-inch tread depth and be rated either “all-weather” or “mud and snow,” according to Colorado State Patrol. Under state law, large commercial vehicles must carry chains when traveling on I-70 and other major roadways ​​between Sept. 1 and May 31 and must use them when conditions require.