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This code list is used in association with the Restriction attribute which is present within the Turn Restriction Feature Type. It describes the type of turn restriction. E.g. 'no_right_turn', 'only_straight_on'.
no_right_turn
Prohibitory restriction: a valid route may not proceed along the restriction relation's geometry.
no_left_turn
Prohibitory restriction: a valid route may not proceed along the restriction relation's geometry.
no_u_turn
Prohibitory restriction: a valid route may not proceed along the restriction relation's geometry.
no_straight_on
Prohibitory restriction: a valid route may not proceed along the restriction relation's geometry.
only_right_turn
Mandatory restriction: a valid route must proceed along the restriction relation's geometry.
only_left_turn
Mandatory restriction: a valid route must proceed along the restriction relation's geometry.
only_u_turn
Mandatory restriction: a valid route must proceed along the restriction relation's geometry.
only_straight_on
Mandatory restriction: a valid route must proceed along the restriction relation's geometry.