The R142A is the second order of new technology cars (NTTs) for the A Division of the New York City Subway. [8] These cars were built by Kawasaki Heavy Industries in Kobe, Hyōgo, Japan and Lincoln, Nebraska, U.S. with final assembly performed at Yonkers, New York.

紐約地鐵R142A型列車，與 R142型 一樣，共同成為 紐約地鐵 A分部 第四代 新技術列車 （英语：New Technology Train） 的第一、二部分 [1]。

纽约地铁R142A型列车，与 R142型 一样，共同成为 纽约地铁 A分部 第四代 新技术列车 的第一、二部分 [1]。 这些车辆由日本 川崎重工 制造，取代 红鸟列车，包括 R26 、 R28 、 R29 、 R33 、 R33WF 、 R36 及 R36WF。 ^ "Some New Subway Cars Put Into Service Monday" 互联网档案馆 的 存档，存档日期May 3, 2008，. NY1–10 July 2000. Retrieved on 2008-04-24.

Together with the R142As, they replaced the Redbird trains, including the R26, R28, R29, R33, R33S, and R36. The R142s and R142As are the first New York City Subway cars to feature recorded announcements. The first R142s were delivered on November 16, 1999, though they initially experienced minor issues that were reported while undergoing testing.

In 1997, an order was placed for 1,080 new cars for the IRT ("A") division, to be known as contracts R-142 and R-142A. The contracts were let to Bombardier, to build the R-142 contract of 680 cars, and to Kawasaki Heavy Industries, to build the R-142A contract of 400 cars.

R142a化学名称是 1-氯-1,1-二氟乙烷，分子式是CH2ClCHF2。 主要用途：用作高温环境冷风机的工质，热泵工质和温控元件的感应介质。 与HCFC-22混合（60：40重量比），替代HCFC-22用作聚烯烃的撤出发泡剂，还用作化工原料。 包装规格：400kg/400L、800kg/800L桶，ISOTANK，或由双方协商解决。 R142a化学名称是1-氯-1,1-二氟乙烷，分子式是CH2ClCHF2。

2022年10月14日 · 2-氯-1，1-二氟乙烷 (R142)可用于固体表面清洁、干燥、脱脂的气溶胶和发泡剂领域，在含氟农药、医药、制冷剂等方面也具有广泛的用途。 2-氯-1 ,1-二氟乙烷可制备多种含氟中间体、农药和医药等，如制备二氟乙醇、二氟乙胺和二氟乙酸酯等中间体，各类除草剂、杀虫剂、抗癌药物、抗菌药物和免疫药物等。 R142制冷剂，简称HCFC-142，中文名称2-氯-1，1-二氟乙烷， 是一种重要的脂肪族含氟中间体，是制备2，2- 二氟乙醇等的中间产物。 R142制冷剂性 …

The R142 and R142A are a type of subway car built by Bombardier Transportation and Kawasaki Rail Car, respectively, for the New York City Subway. They were built and delivered from 1999 to 2003, and were the first in a series of New Technology Trains for the MTA.

Now, CP Rail delivers R142s from Plattsburgh to Fresh Pond Yard, interchange with CSX at Oak Point Yard is no longer done. Some cars moved to 207th St. Yard on 12/20/1999.

New Technology Train (NTT) [1][2][3] is the collective term for the modern passenger fleet of the New York City Subway that has entered service since the turn of the 21st century. This includes the current R142, R142A, R143, R160, R179, R188 and R211 models, along with the planned R262 and R268 models.