You could be helping to save lives, but the bus lane cameras don't always care about that. However, stopping appears to be a better idea than keeping moving as the emergency vehicle passes. This defence was highlighted as plausible in the 2013 case of Doctor Catherine Berry, a lecturer in cell engineering, who received and challenged a £60 fine for pulling into one of the city’s a bus lanes to make way for a fire engine on blue lights. What's the penalty: Fines for bus-lane incursions are set locally, but in Greater London you’ll be fined £130 and typically £60 outside metropolitan areas.