For Panzerblitz, I suggest using the SOP and rules in the Basic Rules Section of Arab-Israeli Wars. If you use this TEC, you will be able to use the counters you have now. Following is a list of terrain features and their effects on vehicle movement.
Infantry can always move one hex, but recieve no road bonus.
Costs trucks 3 MF to enter. Other vehicles pay 2 MF to enter. All vehicles pay 1 MF to enter. If entered from non-road hexside, MF cost is that of other terrain in the road hex. Costs vehicles 2 MF to enter.