how to build a speed bump

{"cid":"91147873","title":"Black \/ Yellow Revolution Parking Road Speed Bumps For Highways , Crossings","imgUrl":"https:\/\/img.chinax.com\/nimg\/ad\/db\/829aed46f49ca9299178eef605b7-200x200-1.jpg","attrs":{"Price":"negotiable","Brand Name":"Skypro","Model Number":"RSH1002","Minimum Order Quantity":"1000kg","Delivery Time":"10 working days after received your payment","Certification":"ROHS\/SGS\/REACH","Place of Origin":"China","Payment Terms":"T\/T or western Union","Supply Ability":"1000ton per month","Packaging Details":"Packed in carton firstly,and then reinforced with wooden case for outer packing","Product Name":"Rubber Speed Hump","Material":"Rubber","Color":"yellow and black","Type":"Speed bump","Application":"Railway,Road etc","Usage":"Reduce vehicles's speed"}}

{"cid":"91221119","title":"183cm Rubber Wheel Stopper with Reflective Strips for Easy Installation Parking Curb","imgUrl":"https:\/\/img.chinax.com\/nimg\/49\/15\/efb2bf33d2daa387033ee7183445-200x200-1.jpg","attrs":{"Price":"$9.65-$10.9","Brand Name":"ROADSAFE","Model Number":"183","Minimum Order Quantity":"2pcs","Delivery Time":"7-35days","Certification":"ce","Place of Origin":"china","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union","Supply Ability":"1000pcs\/day","Productname":"stop cars","Base Size":"183cmx15x10cm","Port":"Ningbo","Shape":"Straight","Material":"Rubber","Top size":"6.5cm-7cm","Reflective Part":"9cm","Height":"10 cm","Weight":"15kg"}}