With Policar track, any constant radius 90° turn can always be replaced with any other constant radius 90° turn: regardless of whether you're using R1, R2, R3, or R4 pieces! To put it simply: all of the curve assembly pieces are interchangeable. So, if for example you grow tired of your layout, you can easily replace a 90° R1 turn with a 90° R3 without trouble.

Features of the Policar Track System:

     - 3.54" / 9 cm lane spacing - ideal for 1/32nd scale

     - extra wide borders with the same texture as the track

     - effective, triple-rail guardrails

     - hard, high grip textured plastic surface

     - rust resistant steel rails

     - special track system geometry - interchangeable curves!

     - compatible with other major brands using adapter pieces