A few issues are throwing caution flags in the air for a proposed event in Bridgewater. The town has been exploring the option of allowing South Shore in Motion to add big rig drag racing to its event in August. However, Mayor David Walker says insurance, the number of concrete barriers needed, along with a traffic plan and security are all a concern at this point. He says they're waiting for more details.Organizers would need to temporary close Dufferin Street, between York Street and Hillcrest Street to hold the afternoon event. Walker says they're hoping to have more information for their next meeting on Monday night.