Actually, the C5 Bagong Ilog flyover is at least one lane short to handle road traffic capacity. Add to that the slow movement of vehicles after it as cars approach the Bayani U-turn flyovers and Fort exit. I actually go straight under that flyover at times... okay din naman and a little traffic management and directing vehicles under can actually help improve traffic flow IMO..
On EDSA - Shaw, notorious sa pag cut and merge ng walang pakialaman from the rightmost lane to the underpass are the GTEx vans usually... along with private cars and a handful of buses. Inutil ang MMDA to do anything about it (source of traffic is usually the Boni Ave area where buses clog the road). Again, if they can keep buses on the first two lanes of EDSA - Shaw ibabaw, excess vehicles can actually take ibabaw to go straight even during rush hours.