1. These three appeals are directed against the judgment dated 15.12.2012 of motor accident claims tribunal (the tribunal) in an accident claim case registered as suit no. 132/2010 and, therefore, have been taken up and heard together and are being decided through this common judgment.

2. On 19.02.2010, a motor vehicular accident had occurred in front of metro workshop Mundka, Nangloi, Delhi involving a motorcycle bearing registration no.HR-12H-3244 (the motorcycle) and a cyclist (Vijay Dass). The motorcycle was admittedly driven by Aijun-(appellant in MAC appeal no.431/2013). Vijay Dass, then aged 35 years, earning his livelihood as security guard was the bicycle rider who suffered injuries and died in the consequence. The police registered a first information report (FIR) no.56/2010 in police station Nangloi, its copy having been submitted on record (at page no.l35 of the paper book in MAC appeal no.252/2013).

3. The wife and son of Vijay Dass (the claimants), first and second respondent in MAC appeal no.252/2013 brought a claim petition before the tribunal on 12.03.2010 seeking compensation under Sections 166 & 140 of the Motor Vehicles Act, 1988 (the MV Act), impleading