The [Formula Presented]Rh nucleus has been studied by in-beam [Formula Presented] spectroscopy with the heavy-ion fusion-evaporation reaction [Formula Presented]Mo[Formula Presented]B, [Formula Presented]2[Formula Presented] at 39 MeV. Gamma-gamma-[Formula Presented] coincidences and directional correlation ratios were measured. Four rotational bands have been identified with similar characteristics to those in other [Formula Presented]≈100 odd-proton nuclei. The positive-parity yrast band based on the [Formula Presented] configuration and the negative-parity [Formula Presented] band, showing large signature splittings, exhibit band crossings at the frequencies of 0.38 MeV and 0.48 MeV, respectively. Experimental Routhians and alignments as well as [Formula Presented] ratios were extracted. The structure of the bands was interpreted within the framework of the cranked shell model and total Routhian surface calculations. © 1997 The American Physical Society.