Driving to work to avoid any problems

It's pretty dramatic seeing how much people's habits change without any real warning. Take for example after the whole issue with increased security from the recent developments half a world away, public transport here in the UK is seen as something possibly less appealing just in case we have a repeat incident of the troubles. I'm noticing far more people are driving or walking their way to work rather than using the tube or bus. Is anyone else noticing this?