UK Government guidance for street design practitioners - abbreviated to MfS, or MfS2.
Both are meant to work below the 'Design Manual for Roads and Bridges', providing more human-scale design of streets and roads. In other words - less highway-specific engineering.
Manual for Streets applies to residential street design; Manual for Streets 2 was a later attempt to extend these principles to urban roads in general.
While both manuals provide very useful information on designing less motor traffic-centric streets, they are both somewhat limited in their consideration of cycling, and cycle-specific design.