The Pennsylvania Senate has given final legislative approval to a bill allowing speed cameras in active highway construction zones.

Senate Bill 172 was sent to the governor’s desk for approval Tuesday by a vote of 45-3.

The legislation would establish a five-year pilot program for using sped cameras in active work zones on interstate highways and the Pennsylvania Turnpike. The cameras photograph a speeding driver’s license plate.

Drivers going over the speed limit by at least 11 mph when construction workers are on the job will get a written warning for the first offense, a $75 fine for the second offense, and a $150 fine for third and following offenses.

Supporters say the program would protect highway workers.

The bill requires at least two signs warning drivers that an upcoming work zone has cameras. One sign would indicate if the cameras are active.

Information on construction zones using cameras would be posted on the websites of PennDOT and the Pennsylvania Turnpike Commission.

The legislation also allows state police to use lidar, a timing device that is similar to radar but uses laser pulses to determine a vehicle’s speed.