But how do navigation apps like these detect traffic jams and accidents? As it turns out, Google Maps and Waze use crowdsourcing and user reports to identify them so you can avoid them.

It reopened just before 6 p.m. Sunday. Multiple Waze users in the area reported standstill traffic backing up 2 miles east of the crash during the closure. This is a developing story and may be ...

A crash caused heavy traffic and delays on the A370 in Somerset this afternoon Tuesday, March 11. The collision happened ...