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+// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION 
+
+// PART IV : UTILIZATION AND TRACTION
+// CHAPTER 5: ELECTRIC TRACTION-SPEED TIME CURVES AND MECHANICS OF TRAIN MOVEMENT
+
+// EXAMPLE : 5.1 :
+// Page number 778
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+speed = 45.0      // Scheduled speed(kmph)
+D = 1.5           // Distance between 2 stops(km)
+t = 20.0          // Time of stop(sec)
+alpha = 2.4       // Acceleration(km phps)
+beta = 3.2        // Retardation(km phps)
+
+// Calculations
+t_total = D*3600/speed                   // Total time(sec)
+T = t_total-t                            // Actual time for run(sec)
+k = (alpha+beta)/(alpha*beta)            // Constant
+V_m = (T/k)-((T/k)**2-(7200*D/k))**0.5   // Maximum speed over the run(kmph)
+
+// Results
+disp("PART IV - EXAMPLE : 5.1 : SOLUTION :-")
+printf("\nMaximum speed over the run, V_m = %.f kmph", V_m)