(Portland, OR) -- TriMet is tightening regulations. Portland's transit organization has more safety and security staff than ever before. They've had a light approach to fare evasion, but that's changing. Inspectors will check fares and violators could face a 250-dollar fine or exclusion from the system. TriMet has reduced fares for people with low incomes and senior citizens. Security staff will also stop riders from carrying leaking items that cause floors to be slippery or sticky. That includes large bags of bottles or cans going to a recycling center. TriMet says it wants buses and trains to be safe, clean and accessible.