I just thought of a case where the blocked value of the head should not get transferred to the reast of the objects - the shop buildings. In most cases, the head is blocked, but if that gets extended to all parts, that obviously won't work very well. I'm not sure what the best solution is. One might be to clear to the blocked flag from the shops, and if desired, put an invisible blocked force object to prevent access to certain shop spaces. Generally, the blocking of some of the shops generally doesn't work as it sort of presumes the entrance should always be on the southern side, and that certainly is not the case in many cities.