Commuters pass Buji Checkpoint after their buses became caught up in a traffic snarl on Shenhui Road on Tuesday morning. Traffic heading toward downtown Shenzhen was held up from 7:50 to 10 a.m. after a car caught fire under the Caopu Flyover at the checkpoint. About 10,000 commuters were forced to get off buses and walk past the checkpoint. It took firefighters half an hour to put out the blaze. Chen Qiwen