Tighter subway security checks in Beijing over the next few months could prove a double-edged sword, pleasing some commuters with greater transport safety but angering others pressed for time. About 1.5 million people ride Beijing's subway every day. Su Yan, 28, takes the subway to work and has to transfer twice, at Xizhimen and Fuxingmen. 'It's absolutely a scary scene at those two transfer stations every morning as hundreds of people move shoulder-to-shoulder between subway lines. If a bomb explodes there, we will all die, most crushed and trampled to death,' he said. Regular commuter Li Zhenkun shared Mr Su's fears and offered qualified support for tighter security efforts during the Olympic Games. 'It could be a help if you hate subway thieves and vendors, but I don't think they will really scare away terrorists who are really determined to cause trouble,' Mr Li said. He said the police seemed especially tough on passengers who looked like migrant labourers. 'They stop them and check their identification cards a lot even if they're not carrying any bags,' Mr Li said. 'I guess there are some kind of stereotypes police use to decide who to stop and who to let go.' Both Mr Su and Mr Li said they did not mind leaving home 10 minutes early to cope with the possible delay from tighter security checks, but they would not tolerate anything longer. Zhang Yue, 30, who spends 90 minutes on the subway getting to work every day, was less tolerant of the new measures. 'I'd rather take a flight to work in Shanghai every day than go through subway checkpoints,' Ms Zhang said. She said authorities often brought these kinds of restrictions in without thinking them through. 'If some decision makers stand at the entrance of a subway station for 10 minutes in the morning, they will realise that these kinds of security checks are totally impractical unless they give everybody a two-month holiday.'