Auckland lines company Vector says heavy congestion from the city's Harbour Bridge closures show it's time to bring in rules to force drivers to give way to utility vehicles responding to emergencies where public saftey is at risk. At the moment when live power lines are brought down, fire or ambulance crews often have to wait until the power is disconnected before giving assistance. And when gas mains are hit it's the same problem. Already a private member's bill is in the ballot to change the Land Transport Rules, but gas and electricity providers say that could be too long to wait. Kathryn Ryan talks to Vector COO, Andrea Robertson