Dashcam footage shows moment traffic stops for dog on M1 motorway near Sheffield | The Star, Sheffield

Three people have been injured in a multi-car crash on the M1 Pacific Motorway at Cowan. Traffic banked up for kilometres after the incident closed a number of south bound lanes near the Hawkesbury River bridge. Two patients were taken to Royal North Shore Hospital with back injuries. Another was taken to Hornsby Ku-ring-gai Hospital with minor injuries. 7NEWS at 6pm. More local news: 7news.com.au/news/sydney #Cowan #7NEWS | 7NEWS Sydney

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