What are track codes and which is best - OO Gauge Code 100 or 75

Ho Track Codes Explained

Track hobbyist railroad model trains seems narrow moder gage compared patio standard What do codes mean for ho track ?

What are track codes and which is best Track model codes code oo

What do codes mean for HO track ? | Model Railroad Hobbyist magazine

What do codes mean for HO track ? | Model Railroad Hobbyist magazine
What do codes mean for HO track ? | Model Railroad Hobbyist magazine

What are track codes and which is best - OO Gauge Code 100 or 75
What are track codes and which is best - OO Gauge Code 100 or 75