My suggestions on vijayawada railway station to avoid trafic and to increase more number of org&term trains is that:
1.)By making vijayawada as a terminal station and rename as ARJUNA TERMINUS VIJAYAWADA(because arjuna is the founder of vijayawada)
2.)orginating & terminating trains to only to Gudivada line,Eluru line and kondapalli line and avoid tenali and guntur line and krishna canal rs as main railway terminus and rename as VIJAYAWADA CENTRAL TERMINUS
3.)Construct...
more...

more no of platforms and pitlines
a.Towards Gudivada-7 platforms
b.Towards Eluru-9 platforms
c.Towards Kondapalli-9 platforms
These platforms having capacity to handle 30 to 32 coaches
4.)Construct railway bypass line like
a.Nuzvid to kondapalli
b.Nuzvid to gudivada
c.kondapalli to mangalagiri
d.mangalagiri to tenali
e.gudivada to tenali
f.gudivada to kondapalli
By these steps kondapalli,Tenali,Gudivada,Mangalagiri RS become a big railway junctions like kalyan( mumbai),kharagpur
5.Develop Machilipatnam railway station because a port was constructed which is biggest on bay of bengal region this to both ap capital regions and telangana state which is nearest to them.
6.Parking and maintainance for large no of trains construct a large place for them(like santragachi to howrah)
7.develop krishna canal rs because it is nearer to vijayawada and ap capital city
A.)AMARAVATHI CENTRAL -NEWLY CONSTRUCTED STATION WITH 12 Platforms
B.)ARJUNA TERMINUS VIJAYAWADA(VIJAYAWADA JUNCTION) -25 Platforms
C.)GUNTUR JUNCTION-13 Platforms
D.)VIJAYAWADA CENTRAL TERMINUS(KRISHNA CANAL JUNCTION) -12 Platforms
E.)TENALI JUNCTION-12 Platforms
F.)KONDAPALLI-10 Platforms
G.)GUDIVADA-8 Platforms
H.)NUZVID-10 Platforms
These are my suggestions if any mistakes are there please suggests by comments
*** THANK YOU ***