Mumbai, Feb. 10 -- Auto rickshaw unions across the Mumbai Metropolitan Region (MMR) will hold a silent protest against the implementation of the e-challan system on February 16. Union members will gather at the Azad Maidan and outside regional transport offices (RTO) and collectorates to demand a return to paper challans, as they argue that e-challans are issued randomly and without their knowledge, even in case when there are no violations....