An efficient referral system is essential in providing access to emergency obstetric care at higher levels of care by supporting antenatal and delivery services in the primary level of care facilities (PLCF). The aim of this thesis was to assess community and health service factors affecting the quality of maternal referrals in rural Tanzania. Ten focus group discussions (FGDs) with health workers and community members were conducted to describe their perceptions on maternal referrals. Women (n=1118) were interviewed to determine awareness of obstetric danger signs and associated factors. Compliance with referral advice was analysed for 1538 women referred from PLCF. Counselling on danger signs and adherence to referral criteria was observed in 438 antenatal consultations. FGDs indicated that women had limited influence, especially on emergency referrals. The process of deciding to seek referral care considered the perception of seriousness and past experience of referral, access to transport, and the cost involved. Women had low awareness of danger signs of obstetric complications: higher years of schooling increased the likelihood of being aware of danger signs. Demographic risks accounted for 70% of referred women but less than half complied with the advice. Compliance was higher for historical obstetric risks, prenatal, natal, and postnatal complications groups. Few women were counselled on pregnancy danger signs and a significant number with ≥5 pregnancies and primigravidae <20 years were not informed of the risk factors. This thesis demonstrated a need for reviewing referral guidelines and an increase in supportive supervision for health workers counselling on obstetric danger signs to enhance acceptance of referrals advices. Women’s education should be given priority for increasing participation in decisions and becoming more aware of danger signs. Costs involved in maternal referrals can be relieved by improving family income, infrastructure, and alleviating the cost of referral through mobilising community transport and financial schemes.