
I live in Bristol, and thanks to the Dog Warden service there are hardly ever any loose dogs on the streets. so yeas I do walk my in season bitches, keeping to pavement walking onlead. You have to be sensible, and cross the road when another dog walker is coming towards you, and a spray of antimate may help.
I can't say I have ever had a problem. In the first week, if there is no other dog in the playing field I will take them in there on a flexi lead, but after that I stick to the streets!!!
I have one half through now, and the other due any day, so my lot will have had nothing but road work for over a month :) As it is the younger two that come in season, the older ones don't mind not going to the park for Free running too much!