I felt hazard concrete in the vanilla game served no compelling purpose outside of aesthetics and recycling fodder, so I added motion dampening effects to hazard concrete and refined hazard concrete.

-Player speed on foot: 60% on Hazard, 30% on Refined-Hazard
-A low vehicle speed limit is enforced while driving on Hazard and Refined-Hazard Concrete

0.2.2:
-massive performance increase in the vehicle checking script. No longer eating UPS like candy.