diff --git a/particle.py b/particle.py
index 7f70df8..8ff5df5 100644
--- a/particle.py
+++ b/particle.py
@@ -70,7 +70,7 @@ class Particle():
         for _ in range(self.nb_of_ticks):
             x_tick = []
             for _ in range(self.nb_vehicles):
-                x_tick.append(rd.randrange(self.x_min, self.x_max +1, 1))
+                x_tick.append(rd.uniform(self.x_min, self.x_max))
             pos.append(x_tick)
         return pos
     
@@ -81,7 +81,8 @@ class Particle():
         for _ in range(self.nb_of_ticks):
             v_tick = []
             for _ in range(self.nb_vehicles):
-                v_tick.append(rd.randrange(-vel_coeff, vel_coeff +1, 1) * self.alpha)
+                # v_tick.append(rd.randrange(-vel_coeff, vel_coeff +1, 1) * self.alpha)
+                v_tick.append(rd.uniform(-vel_coeff, vel_coeff) * self.alpha)
             vel.append(v_tick)
         return vel