Colorado truckers will soon have to complete a human trafficking awareness course to get a commercial driver’s license under a bill signed into law Thursday by Gov. John Hickenlooper.

House Bill 1018, which had bipartisan support, mandates that new commercial driver’s license applicants go through a half-hour training at no extra cost. It will go into effect over the summer.

Lawmakers and advocacy groups hope that, with more trained eyes on the road, law enforcement will have a helping hand in stopping sex and labor trafficking.

What it looks like when Colorado’s governor makes a law #copolitics #coleg pic.twitter.com/r2AcT8hoh7 — Jesse Aaron Paul (@JesseAPaul) April 12, 2018

“It just heightens awareness, and it shows you how you can be part of the solution,” said Sen. Rachel Zenzinger, D-Arvada, one of the bill’s sponsors.

The trucking industry supported the measure. Several states have passed similar laws.

The bill passed the Colorado legislature with limited opposition.