It runs from Shiguang Road, in Yangpu District to Shendu Highway, in Minhang.

This has caused much doubt among the public in Shanghai Metro's ability to accurately predict passenger flows for future lines.

This is not surprising given Line 8 is planned to serve some of Shanghai's densest neighborhoods and several major attractions.

However the forecast was revised many times and finally downgraded to 200,000 people/day through "internal negotiation and coordination", which allowed Shanghai Alstom, a company interested in manufacturing and selling Class C trains in Shanghai, to build trains for Line 8.

From June 19 to July 1, 2009, during the second phase of line 8 signal commissioning (upgrade from fully manual driving to CBTC semi-automatic driving), the first phase of operation efficiency was unstable, and trains stopped frequently.