A major freeway into Sydney was closed for around 10 hours ... puncturing the tyres of hundreds of cars and causing a traffic jam extending almost 30km.

A traffic jam on the M1 on the NSW Central Coast was caused by hundreds of cars getting flat tyres due to metal shards.

A major freeway into Sydney was closed for around 10 hours today after a truck carrying metal debris lost its load on the southbound lanes of the M1 around 5:00am this morning, puncturing the tyres of ...