to eliminate possible confusion between Wenshui East Road and Wenshui Road, a newer station of line 1. However, in a more recent case, the same type of confusion occurred at West Yingao Road station of line 3 and East Yingao Road station of line 10. Stations Service routes Important stations The northern terminus. Baoshan Town is located near this station. Baoyang Road Ferry Terminal is located nearby. This station is located at Wusong Town, with a memorial for the Songhu Railway, which was constructed in the 1890s along the route of China's first railway, the Woosung Road The Jiangwan Town offices are nearby this station. Located near the residence of Shanghai Shenhua Football Club. Interchange with line 4. A Virtual interchange with line 1 is also present. Interchange with lines 2 and 4. Interchange with lines 4 and 9. Interchange with lines 1 and 15. Headways Because it shares tracks with line 4, line 3 operates on a comparatively looser schedule, with an average interval of around 7 minutes (5 minutes in the peak hours). However, riders can expect a 2-minute train interval at any one of the shared-line stations during rush hour. To avoid confusion, line 3 trains have the number 3 painted on the sides of trains, and line 4 trains the number 4. During trail operation, headways were 30 minutes, reduced to 15 minutes in September 2001. The line was extremely popular with 15,000 passengers on the first day and 30,000 after three day. Not all trains serve the whole line. Because Baoshan District is largely suburban, some trains stop service at Changjiang South Road, while others continue to Jiangyang North Road, the northernmost station. Therefore, service between Changjiang South Road and Jiangyang North Road operates on a 10-to-12-minute basis, compared to the rest of the line which operates on a 5-to-7-minute basis. An LED screen in front of a train will indicate its terminal station, in addition to the station broadcast and the arrival board. Because line 3 is elevated, transferring to other underground stations typically takes more walking. In-system transfer has been introduced to all interchange stations except Shanghai Railway Station (where lines 3 and 4 meets line 1). Virtual interchange is offered at both stations for Public Transportation Card holders. <onlyinclude> Technology Signaling Lines 3 and 4 has been operating over capacity due to large passenger flows for a number of years. With the