Morning rush hour times can range from 6–10 am in cities like New York. Some New York commuters try to be on the road by at least 6am because traffic gets heavy between 6:30 and 10am. Many train commuters leave early to get the best seats on the trains, because by 7am the trains are packed with passengers standing or those who cannot get on. Los Angeles, California has several rush hours, including a midnight rush for night workers. Bus and train service (such as Metrolink) in Los Angeles are limited and tend to be underused, but their use is increasing. In the Chicago area people use Metra Trains, the 'L', and buses.