I think no values are shared between all non-religious. Some folks value family and kids, other folks will hate you for that (with unfair advantage & environmental concerns argument). Some folks value community and respect to each other, other folks think it's boring & tyrannical (why should said person listen to rules that there shouldn't be loud music at night?).

To get to the first part of the question, I think religious values do provide certain guarantees. For example, family is placed quite high in all religions. This results in "don't be a loud asshole at night", because whole neighbourhood's parents are tired, kids needs to sleep. In a community like that, the person with loud motorcycle at night will be pressured to stop doing waking up others.