Traffic is backed up on the M1 motorway following an incident which has seen drivers stopping with flat tyres caused by shards of metal on the road. ABC Radio Sydney listener Shabby spoke to 702 Breakfast presenter Craig Reucassel about his observations. Tune in to Breakfast with Craig Reucassel on 702 ABC Radio Sydney or on the ABC listen app: https://ab.co/SydneyLocalRadio | ABC Sydney

16K views · 128 reactions | Sydney's northern M1 freeway is set for a multi-million dollar upgrade, designed to turn the 55-year-old road into a 'smart motorway'. The government is seeking bids to install more electronic signage and surveillance to help with traffic flow, and avoid delays caused by accidents. www.7NEWS.com.au #nswpol #7NEWS | 7NEWS Sydney | Facebook