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We present high-resolution observations, using both the European VLBI Network(EVN) at 1.7-GHz, and the Very Long Baseline Array (VLBA) at 5 and 8.4-GHz toimage radio structures of 14 compact sources classified as broad absorptionline (BAL) quasars based on the absorption index (AI). All source but one wereresolved, with the majority showing core-jet morphology typical for radio-loudquasars. We discuss in details the most interesting cases. The high radioluminosities and small linear sizes of the observed objects indicate they arestrong young AGNs. Nevertheless, the distribution of the radio-loudnessparameter, log(Ri), of a larger sample of AI quasars shows that the objectsobserved by us constitute the most luminous, small subgroup of AI population.Additionally we report that for the radio-loudness parameter, the distributionof AI quasars and those selected by using the traditional balnicity index (BI),BI quasars differ significantly. Strong absorption is connected with the lowerlog(Ri), and thus probably with larger viewing angles. Since, the AI quasarshave on average larger log(Ri), the orientation can cause that we see them lessabsorbed. However, we suggest that the orientation is not the only parameterthat affects the detected absorption. The fact that the strong absorption isassociated with the weak radio emission is equally important and worthexploring.

A VLBI survey of compact Broad Absorption Lines (BAL) quasars with BALnicity Index BI=0