If you specify a negative scale, Oracle Database rounds the actual data to the specified number of places to the left of the decimal point. For example, specifying (7,-2) means Oracle Database rounds to the nearest hundredths, as shown in Table 26-1.
McCann (2000) found that households in communities with good transit use save an average of about $3,000 annually on transportation costs. Litman (2004) found annual transportation cost savings of about $1,300 per household in cities with well-established rail transit systems compared with cities that lack rail.
The hypothetical math works, too. If the average DR trip provided by a TNC costs $13 on average, this would generate marginal savings of $10 per ride for transit agencies. If the cost was closer to $18 per ride, thatâs still a net reduction of $5 per ride. Multiplying those savings against the 223 million trips per year, transit agencies would free up $1.1 to $2.2 billion in their operational budgets.