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"}}