Electronic surveillance of the toll express lanes that Colorado’s Department of Transportation relies on to reduce highway traffic congestion meant computers kicked out $57 million in fines mailed to drivers this past year for crossing double-white lines. The automated enforcement has registered more than 463,488 violations — about 1,500 per day. But drivers who contend they had good safety and other reasons for their actions complain that CDOT’s system, which uses license plate information and artificial intelligence to track alleged offenders, gives insufficient opportunity to dispute fines — compelling drivers to pay $75 within 20 days to avoid a doubled penalty of $150.