def vehicleTypes2flt(outSTRM, vtIDm):
    """
    Currently, rather a stub than an implementation. Writes the vehicle ids stored
    in the given "vtIDm" map formatted as a .flt file readable by PHEM.

    The following may be a matter of changes:
    - A default map is assigned to all vehicle types with the same probability
    """
    for q in sorted(vtIDm._m):
        print('%s,%s,%s' % (vtIDm.g(q), '<VEHDIR>\\PC\\PC_%s.GEN' % q, 1.0),
            file=outSTRM)
